CN211221771U - Forming die of lid stock behind cell-phone including center - Google Patents

Forming die of lid stock behind cell-phone including center Download PDF

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Publication number
CN211221771U
CN211221771U CN201920822091.5U CN201920822091U CN211221771U CN 211221771 U CN211221771 U CN 211221771U CN 201920822091 U CN201920822091 U CN 201920822091U CN 211221771 U CN211221771 U CN 211221771U
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die
mobile phone
mold
middle frame
insert
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徐雄
石茂东
陈林
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Kaiping Yingguang Electromechanical Technology Co ltd
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Kaiping Yingguang Electromechanical Technology Co ltd
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Abstract

The utility model provides a forming die of mobile phone rear cover blank including a middle frame, which is characterized in that, the forming die of mobile phone rear cover blank including the middle frame is provided with five forming surfaces because a mobile die core and a fixed die core are both provided with five forming surfaces, and the maximum distance between the four forming surfaces around the mobile die core and the insert combination is not less than the minimum distance between the mobile die core and the fixed die core, so that the mobile phone rear cover and the mobile phone middle frame are integrated, the production process is reduced, the cost is reduced, the appearance of the mobile phone rear cover blank integrated with the middle frame is more beautiful than that of a non-integrated type, the volume of the mobile die cavity before stopping compression is larger than that of a product because of the movable die cavity and a cold material cavity, cooled liquid raw materials flow to the cold material cavity easily, the liquid raw materials in the mobile phone rear cover and the mobile die cavity of the middle frame outside the cold material cavity flow uniformly, the mobile phone rear cover and the middle, and the product has good internal stress, beautiful appearance, uniform thickness and difficult mutual separation of composite materials.

Description

一种包括中框的手机后盖胚料的成型模具A molding die for mobile phone back cover blank including middle frame

技术领域technical field

本实用新型涉及一种模具，尤其涉及一种包括中框的手机后盖胚料的成型模具。The utility model relates to a mould, in particular to a mould for forming a blank of a back cover of a mobile phone including a middle frame.

背景技术Background technique

注塑模具是一种生产塑胶制品的工具，也是赋予塑胶制品完整结构和精确尺寸的工具。注塑成型是批量生产某些形状复杂部件时用到的一种加工方法。具体指将受热融化的塑料由注塑机高压射入模腔，经冷却固化后，得到成形品。Injection mold is a tool for producing plastic products, and it is also a tool for giving plastic products complete structure and precise dimensions. Injection molding is a processing method used in the mass production of some complex-shaped parts. Specifically, it refers to the injection of the heated and melted plastic into the cavity of the injection molding machine at high pressure, and after cooling and solidification, a molded product is obtained.

注塑模具由动模和定模两部分组成，动模安装在注射成型机的移动模板上，定模安装在注射成型机的固定模板上，都是动模和定模组成固定型腔，型腔大小不可以改变。在注射成型时动模与定模闭合构成浇注系统和型腔，开模时动模和定模分离以便取出塑料制品。为了减少繁重的模具设计和制造工作量，注塑模大多采用了标准模架。The injection mold consists of a movable mold and a fixed mold. The movable mold is installed on the moving template of the injection molding machine, and the fixed mold is installed on the fixed template of the injection molding machine. Both the movable mold and the fixed mold form a fixed cavity. The size cannot be changed. During injection molding, the movable mold and the fixed mold are closed to form a gating system and a cavity. When the mold is opened, the movable mold and the fixed mold are separated to take out the plastic product. In order to reduce the heavy workload of mold design and manufacturing, most of the injection molds use standard mold bases.

目前，模具行业内的产品成型的模具都采用的是往固定型腔内注胶，所述固定型腔容积的大小与产品的体积大小相同，在成型的过程中固定型腔偏小导致原料流动阻力大，不容易成型，为了达到产品成型必须加大注塑压力和射胶速度，这样导致所成型产品的内应力大，外观不好、厚度不均匀、复合材料易分离，从而使产品质量很差、良率低。At present, the molds for product molding in the mold industry all use glue injection into a fixed cavity. The volume of the fixed cavity is the same as the volume of the product. During the molding process, the fixed cavity is too small, which leads to the flow of raw materials. The resistance is large and it is not easy to form. In order to achieve product forming, the injection pressure and injection speed must be increased, which leads to large internal stress of the formed product, poor appearance, uneven thickness, and easy separation of composite materials, resulting in poor product quality. , Low yield.

实用新型内容Utility model content

基于现有技术的不足，本实用新型创造的目的在于提供一种包括中框的手机后盖胚料的成型模具，本实用新型的包括中框的手机后盖胚料的成型模具由于移动模模芯和固定模模芯均设有五个成型面，并且移动模模芯周围的四个成型面与镶件组合之间的最大距离≥移动模模芯和所述固定模模芯之间的最小距离，使手机后盖和手机中框为一体式，过度自然，减少生产工序，降低成本，并且中框一体式手机后盖胚料外观比非一体式的漂亮，由于设有活动型腔和冷料腔，使活动型腔停止压缩前的容积大于产品的体积，冷却的液态原料容易流动至冷料腔，冷料腔以外的成型手机后盖及其中框的活动型腔内的液态原料流动均匀，手机后盖及其中框在低速或低压下容易成型，而且产品内应力好、外观漂亮、厚度均匀、复合材料不易相互分离Based on the deficiencies of the prior art, the purpose of the present invention is to provide a molding die for the blank of the back cover of the mobile phone including the middle frame. Both the core and the fixed mold core are provided with five molding surfaces, and the maximum distance between the four molding surfaces around the movable mold core and the combination of the inserts ≥ the minimum distance between the movable mold core and the fixed mold core The distance makes the back cover of the mobile phone and the middle frame of the mobile phone one-piece, which is too natural, reduces the production process and reduces the cost, and the appearance of the blank of the mobile phone back cover of the one-piece mobile phone is more beautiful than that of the non-integrated one, due to the movable cavity and cooling. Material cavity, so that the volume of the movable cavity before the compression is stopped is larger than the volume of the product, the cooled liquid raw material can easily flow to the cold material cavity, and the liquid material in the movable cavity of the molding mobile phone back cover and the middle frame outside the cold material cavity flows evenly , The back cover and the middle frame of the mobile phone are easy to form at low speed or low pressure, and the product has good internal stress, beautiful appearance, uniform thickness, and the composite materials are not easy to separate from each other.

为了实现上述目的，本实用新型提供了一种包括中框的手机后盖胚料的成型模具，其包括移动模和固定模，所述移动模设有移动模支撑装置，所述固定模设有固定模支撑装置，所述移动模和所述固定模相互配合，所述移动模设有移动模模芯，所述固定模上设有固定模模芯，还包括导向组件、水道装置、冷料腔和定位结构，所述移动模包括第二次移动机构和限位装置，所述第二次移动机构通过所述导向组件、所述限位装置与所述移动模活动连接，所述移动模的模芯通过所述定位结构定位在所述支撑装置上，所述固定模的模芯通过所述定位结构定位在所述支撑装置上，所述水道装置分布在所述移动模内和所述固定模内，所述移动模模芯有五个成型面，周围的四个成型面与中间的成型面之间的夹角大于或者等于90度，所述固定模模芯有五个成型面，周围的四个成型面与中间的成型面之间的夹角大于或者等于90度。In order to achieve the above purpose, the present invention provides a molding die for a blank of a mobile phone back cover including a middle frame, which includes a movable die and a fixed die, the movable die is provided with a movable die support device, and the fixed die is provided with Fixed mold support device, the movable mold and the fixed mold cooperate with each other. A cavity and a positioning structure, the moving mold includes a second moving mechanism and a limiting device, the second moving mechanism is movably connected to the moving mold through the guide assembly and the limiting device, and the moving mold The mold core of the fixed mold is positioned on the support device through the positioning structure, the mold core of the fixed mold is positioned on the support device through the positioning structure, and the water channel device is distributed in the moving mold and the In the fixed mold, the movable mold core has five molding surfaces, the angle between the four surrounding molding surfaces and the middle molding surface is greater than or equal to 90 degrees, and the fixed mold core has five molding surfaces, The angle between the four surrounding molding surfaces and the middle molding surface is greater than or equal to 90 degrees.

作为本实用新型包括中框的手机后盖胚料的成型模具的改进，本实用新型包括中框的手机后盖胚料的成型模具还包括排气装置，所述第二次移动机构包括移动承载装置、镶件组合和连接件，所述镶件组合通过所述连接件固定在所述移动承载装置上，所述镶件组合、所述移动模模芯和所述固定模模芯组成活动型腔，所述活动型腔与所述冷料腔连通，所述排气装置设在所述活动型腔周围，所述镶件组合直接或者间接地通过所述定位结构定位在所述支撑装置上，所述定位结构位于所述活动型腔的一侧，所述冷料腔位于所述活动型腔的另一侧并与所述活动型腔连通，所述冷料腔有一个或两个，所述移动模模芯周围的四个成型面与镶件组合之间的最大距离为T3,所述移动模模芯和所述固定模模芯之间的最小距离为 T4,T3≥T4。As an improvement of the molding die of the mobile phone back cover blank including the middle frame of the present invention, the molding die of the mobile phone back cover blank including the middle frame of the present invention also includes an exhaust device, and the second moving mechanism includes a moving bearing A device, an insert assembly and a connecting piece, the insert assembly is fixed on the moving carrying device through the connecting piece, and the insert assembly, the moving mold core and the fixed mold core form a movable type The movable cavity communicates with the cold material cavity, the exhaust device is arranged around the movable cavity, and the insert assembly is directly or indirectly positioned on the support device through the positioning structure , the positioning structure is located on one side of the movable cavity, the cold material cavity is located on the other side of the movable cavity and communicated with the movable cavity, and there are one or two cold material cavities, The maximum distance between the four molding surfaces around the movable mold core and the insert combination is T3, and the minimum distance between the movable mold core and the fixed mold core is T4, where T3≧T4.

作为本实用新型包括中框的手机后盖胚料的成型模具的改进，本实用新型包括中框的手机后盖胚料的成型模具还包括注料结构，所述排气装置包括气槽、排气间隙和排气通道，所述排气间隙与所述气槽联通，所述排气间隙分为两个或者两个以上，所述每一个排气间隙的大小根据所述排气间隙所在模具位置的不同来设定一个所述注料结构与两个所述冷料腔之间呈现三角形、接近等腰三角形或者接近等边三角形的形状，所述冷料腔位于所述固定模模芯与所述镶件组合之间，所述冷料腔的腔体主要位于所述固定模模芯或者所述镶件组合内。As an improvement of the molding die of the mobile phone back cover blank including the middle frame of the present invention, the molding die of the mobile phone back cover blank including the middle frame of the present invention also includes a material injection structure, and the exhaust device includes an air groove, a discharge Air gap and exhaust channel, the exhaust gap communicates with the air groove, the exhaust gap is divided into two or more, and the size of each exhaust gap is based on the mold where the exhaust gap is located. The difference in position is to set the shape of a triangle, an isosceles triangle or an equilateral triangle between one of the injection structures and the two cold material cavities, and the cold material cavity is located between the fixed mold core and the fixed mold core. Between the insert assemblies, the cavity of the cold material cavity is mainly located in the fixed mold core or the insert assembly.

作为本实用新型包括中框的手机后盖胚料的成型模具的改进，本实用新型包括中框的手机后盖胚料的成型模具所述排气间隙的大小从离模具的进料口最近端到离模具的进料口最远端依次变化或者所述排气间隙的大小从模具成型最容易的位置到模具成型最难的位置依次变化。As an improvement to the molding die of the mobile phone back cover blank including the middle frame of the present invention, the size of the exhaust gap is from the nearest end to the feed port of the mold. To the farthest end from the feed port of the mold, the size of the exhaust gap varies sequentially from the position where the mold is the easiest to form to the position where the mold is the most difficult.

作为本实用新型包括中框的手机后盖胚料的成型模具的改进，本实用新型包括中框的手机后盖胚料的成型模具的所述定位结构包括唧嘴镶件和进料口镶件，所述唧嘴镶件通过定位销安装在所述固定模的中心位置，所述进料口镶件通过定位销安装在所述移动模的中心位置。As an improvement of the molding die of the mobile phone back cover blank including the middle frame of the present invention, the positioning structure of the molding die of the mobile phone back cover blank including the middle frame of the present invention includes a nozzle insert and a feed port insert , the nozzle insert is installed at the center position of the fixed mold through a positioning pin, and the feed port insert is installed at the center position of the movable mold through a positioning pin.

作为本实用新型包括中框的手机后盖胚料的成型模具的改进，本实用新型包括中框的手机后盖胚料的成型模具的所述活动型腔是一个或者一个以上。As an improvement of the molding die of the mobile phone back cover blank including the middle frame of the present invention, the movable cavity of the mobile phone back cover blank of the present invention is one or more than one.

作为本实用新型包括中框的手机后盖胚料的成型模具的改进，本实用新型包括中框的手机后盖胚料的成型模具的所述排气间隙的大小为L，0.005mm≤L≤ 0.05mm。As an improvement of the molding die of the mobile phone back cover blank including the middle frame of the present invention, the size of the exhaust gap of the molding die of the mobile phone back cover blank of the present invention is L, 0.005mm≤L≤ 0.05mm.

与现有技术相比较，本实用新型包括中框的手机后盖胚料的成型模具具有以下有益效果：本实用新型的包括中框的手机后盖胚料的成型模具由于移动模模芯和固定模模芯均设有五个成型面，并且移动模模芯周围的四个成型面与镶件组合之间的最大距离≥移动模模芯和所述固定模模芯之间的最小距离，使手机后盖和手机中框为一体式，过度自然，减少生产工序，降低成本，并且中框一体式手机后盖胚料外观比非一体式的漂亮，由于设有活动型腔和冷料腔，使活动型腔停止压缩前的容积大于产品的体积，冷却的液态原料容易流动至冷料腔，冷料腔以外的成型手机后盖及其中框的活动型腔内的液态原料流动均匀，手机后盖及其中框在低速或低压下容易成型，而且产品内应力好、外观漂亮、厚度均匀、复合材料不易相互分离。Compared with the prior art, the molding die of the mobile phone back cover blank including the middle frame of the present invention has the following beneficial effects: the molding die of the mobile phone back cover blank including the middle frame of the present invention Each mold core is provided with five molding surfaces, and the maximum distance between the four molding surfaces around the moving mold core and the combination of the inserts ≥ the minimum distance between the moving mold core and the fixed mold core, so that The back cover of the mobile phone and the middle frame of the mobile phone are one-piece, which is too natural, reducing the production process and reducing the cost, and the appearance of the blank of the mobile phone back cover of the one-piece mobile phone is more beautiful than that of the non-integrated one. Due to the movable cavity and the cold material cavity, The volume of the movable cavity before the compression is stopped is greater than the volume of the product, and the cooled liquid raw material can easily flow to the cold cavity. The cover and the middle frame are easy to form at low speed or low pressure, and the product has good internal stress, beautiful appearance, uniform thickness, and the composite materials are not easy to separate from each other.

附图说明Description of drawings

图1为本实用新型包括中框的手机后盖胚料的成型工艺优选实施例的所述原材料处理示意图。FIG. 1 is a schematic diagram of the raw material processing according to a preferred embodiment of the molding process of the blank of the mobile phone back cover including the middle frame of the present invention.

图2为本实用新型包括中框的手机后盖胚料的成型工艺优选实施例的开始合模前的示意图。FIG. 2 is a schematic diagram of a preferred embodiment of the molding process of the mobile phone back cover blank including the middle frame of the present invention before mold clamping begins.

图3为本实用新型包括中框的手机后盖胚料的成型工艺优选实施例的形成所述活动型腔A的剖面图。FIG. 3 is a cross-sectional view of forming the movable cavity A according to a preferred embodiment of the molding process of the mobile phone back cover blank including the middle frame of the present invention.

图4为本实用新型包括中框的手机后盖胚料的成型工艺优选实施例的形成所述活动型腔D的剖面图。FIG. 4 is a cross-sectional view of forming the movable cavity D according to a preferred embodiment of the molding process of the mobile phone back cover blank including the middle frame of the present invention.

图5为本实用新型包括中框的手机后盖胚料的成型工艺优选实施例的形成所述活动型腔D中W的放大示意图5 is an enlarged schematic view of forming W in the movable cavity D according to a preferred embodiment of the molding process of the mobile phone back cover blank including the middle frame of the present invention

图6为本实用新型包括中框的手机后盖胚料的成型工艺优选实施例的形成所述活动型腔B的剖面图。FIG. 6 is a cross-sectional view of forming the movable cavity B according to a preferred embodiment of the molding process of the mobile phone back cover blank including the middle frame of the present invention.

图7为本实用新型包括中框的手机后盖胚料的成型工艺优选实施例的形成所述活动型腔C的剖面图。FIG. 7 is a cross-sectional view of forming the movable cavity C according to a preferred embodiment of the molding process of the mobile phone back cover blank including the middle frame of the present invention.

图8为本实用新型包括中框的手机后盖胚料的成型工艺优选实施例的形成所述活动型腔E的剖面图。FIG. 8 is a cross-sectional view of forming the movable cavity E according to a preferred embodiment of the molding process of the mobile phone back cover blank including the middle frame of the present invention.

图9为本实用新型包括中框的手机后盖胚料的成型工艺优选实施例的取出包括中框的手机后盖胚料的剖面图。9 is a cross-sectional view of a preferred embodiment of the molding process of the mobile phone back cover blank including the middle frame of the present invention, which is taken out of the mobile phone back cover blank including the middle frame.

图10为本实用新型包括中框的手机后盖胚料的成型工艺优选实施例的包括中框的手机后盖胚料的立体图。FIG. 10 is a perspective view of a mobile phone back cover blank including a middle frame according to a preferred embodiment of the molding process of the mobile phone back cover blank including the middle frame of the present invention.

图11为本实用新型包括中框的手机后盖胚料的成型工艺优选实施例的移动模模芯的立体图。FIG. 11 is a perspective view of a movable mold core according to a preferred embodiment of the molding process of the mobile phone back cover blank including the middle frame of the present invention.

图12为本实用新型包括中框的手机后盖胚料的成型工艺优选实施例的固定模模芯的立体图。FIG. 12 is a perspective view of a fixed mold core according to a preferred embodiment of the molding process of the mobile phone back cover blank including the middle frame of the present invention.

图13为本实用新型包括中框的手机后盖胚料的成型工艺优选实施例的的移动模示意图。FIG. 13 is a schematic diagram of a movable mold according to a preferred embodiment of the molding process of the blank for the back cover of the mobile phone including the middle frame of the present invention.

图14为本实用新型包括中框的手机后盖胚料的成型工艺优选实施例的的固定模示意图。14 is a schematic diagram of a fixed mold according to a preferred embodiment of the molding process of the blank of the mobile phone back cover including the middle frame of the present invention.

具体实施方式Detailed ways

本实用新型包括中框的手机后盖胚料的成型模具适用于生产包括中框的手机后盖胚料。The molding die of the mobile phone back cover blank including the middle frame of the utility model is suitable for producing the mobile phone back cover blank including the middle frame.

参考图1、图2、图3、图4、图5、图6、图7、图8、图9、图10、图11、图12、图13和图14，详细描述本实用新型包括中框的手机后盖胚料的成型模具的优选实施例及其他实施例。Referring to Figure 1, Figure 2, Figure 3, Figure 4, Figure 5, Figure 6, Figure 7, Figure 8, Figure 9, Figure 10, Figure 11, Figure 12, Figure 13 and Figure 14, the present invention is described in detail including The preferred embodiment and other embodiments of the molding die for the blank of the mobile phone back cover of the frame.

本实用新型提供一种包括中框的手机后盖胚料的成型模具，其包括移动模1 和固定模2，所述移动模1设有移动模支撑装置(附图中未标注出来)，所述固定模设2有固定模支撑装置2.4，所述移动模1和所述固定模2相互配合，所述移动模1设有移动模模芯1.12，所述固定模2上设有固定模模芯2.1，还包括导向组件3、水道装置5、冷料腔F和定位结构6，所述移动模1包括第二次移动机构1.1和限位装置1.2，所述第二次移动机1.1构通过所述导向组件3、所述限位装置1.2与所述移动模1活动连接，所述移动模1的模芯1.4通过所述定位结构6定位在所述支撑装置上，所述固定模2的模芯2.1通过所述定位结构定位在所述支撑装置2.4上，所述水道装置5分布在所述移动模1内和所述固定模2内，所述移动模模芯1.12有五个成型面1.12.1，周围的四个成型面1.12.1与中间的成型面1.12.1之间的夹角等于90度，所述固定模模芯2.1有五个成型面2.1.1，周围的四个成型面2.1.1与中间的成型面2.1.1之间的夹角等于90度。The utility model provides a molding die for a mobile phone back cover blank including a middle frame. The fixed mold 2 is provided with a fixed mold support device 2.4, the movable mold 1 and the fixed mold 2 cooperate with each other, the movable mold 1 is provided with a movable mold core 1.12, and the fixed mold 2 is provided with a fixed mold mold The core 2.1 also includes a guide assembly 3, a water channel device 5, a cold material cavity F and a positioning structure 6, the moving die 1 includes a second moving mechanism 1.1 and a limiting device 1.2, the second moving mechanism 1.1 The mechanism passes through The guide assembly 3 and the limiting device 1.2 are movably connected with the moving mold 1, the mold core 1.4 of the moving mold 1 is positioned on the supporting device through the positioning structure 6, and the fixed mold 2 is positioned on the supporting device. The mold core 2.1 is positioned on the support device 2.4 through the positioning structure, the water channel device 5 is distributed in the movable mold 1 and the fixed mold 2, and the movable mold core 1.12 has five molding surfaces 1.12.1, the angle between the four surrounding molding surfaces 1.12.1 and the middle molding surface 1.12.1 is equal to 90 degrees, the fixed mold core 2.1 has five molding surfaces 2.1.1, the surrounding four The angle between the profiled surface 2.1.1 and the intermediate profiled surface 2.1.1 is equal to 90 degrees.

在其他实施例中，本实用新型包括中框的手机后盖胚料的成型模具其包括移动模1和固定模2，所述移动模1和所述固定模2设有支撑装置，所述移动模1 和所述固定模2相互配合，所述移动模1和所述固定模2上都设有模芯，还包括导向组件3、水道装置5、冷料腔F和定位结构6，所述移动模1包括第二次移动机构1.1和限位装置1.2，所述第二次移动机1.1构通过所述导向组件3、所述限位装置1.2与所述移动模1活动连接，所述移动模1的模芯1.4通过所述定位结构6定位在所述支撑装置上，所述固定模2的模芯2.1通过所述定位结构定位在所述支撑装置2.4上，所述水道装置5分布在所述移动模1内和所述固定模2 内，所述移动模模芯1.12有五个成型面1.12.1，周围的四个成型面1.12.1与中间的成型面1.12.1之间的夹角大于90度，所述固定模模芯2.1有五个成型面2.1.1，周围的四个成型面2.1.1与中间的成型面2.1.1之间的夹角大于90度。In other embodiments, the present invention includes a middle-frame mobile phone back cover blank forming mold, which includes a movable mold 1 and a fixed mold 2. The movable mold 1 and the fixed mold 2 are provided with supporting devices. The mold 1 and the fixed mold 2 cooperate with each other. The movable mold 1 and the fixed mold 2 are provided with mold cores, and also include a guide assembly 3, a water channel device 5, a cold material cavity F and a positioning structure 6. The The moving mold 1 includes a second moving mechanism 1.1 and a limiting device 1.2. The second moving mechanism 1.1 is movably connected to the moving mold 1 through the guide assembly 3 and the limiting device 1.2. The mold core 1.4 of the mold 1 is positioned on the support device through the positioning structure 6, the mold core 2.1 of the fixed mold 2 is positioned on the support device 2.4 through the positioning structure, and the water channel device 5 is distributed in the In the movable mold 1 and the fixed mold 2, the movable mold core 1.12 has five molding surfaces 1.12.1, and the four surrounding molding surfaces 1.12.1 and the middle molding surface 1.12.1 The included angle is greater than 90 degrees, the fixed mold core 2.1 has five molding surfaces 2.1.1, and the included angle between the four surrounding molding surfaces 2.1.1 and the middle molding surface 2.1.1 is greater than 90 degrees.

在本实施例中，本实用新型包括中框的手机后盖胚料的成型模具还包括排气装置，所述第二次移动机构1.1包括移动承载装置(附图中未标注出来)、镶件组合1.1.1和连接件(附图中未标注出来)，所述镶件组合1.1.1通过所述连接件固定在所述移动承载装置上，所述镶件组合1.1.1、所述移动模模芯1.12和所述固定模模芯2.1组成活动型腔，所述活动型腔与所述冷料腔F连通，所述排气装置设在所述活动型腔周围，所述镶件组合1.1.1直接或者间接地通过所述定位结构6定位在所述支撑装置2.4上，所述定位结构6位于所述活动型腔的一侧，所述冷料腔F位于所述活动型腔的另一侧，所述冷料腔F有两个，所述移动模模芯1.12周围的四个成型面1.12.1与镶件组合1.1.1之间的最大距离为T3,所述移动模模芯1.12和所述固定模模芯2.1之间的最小距离为T4,T3≥T4。In this embodiment, the molding die of the mobile phone back cover blank of the present invention including the middle frame also includes an exhaust device, and the second moving mechanism 1.1 includes a moving bearing device (not marked in the drawings), inserts The combination 1.1.1 and the connecting piece (not marked in the drawings), the inserting piece combination 1.1.1 is fixed on the moving carrying device through the connecting piece, the inserting piece combination 1.1.1, the moving The mold core 1.12 and the fixed mold core 2.1 form a movable cavity, the movable cavity communicates with the cold material cavity F, the exhaust device is arranged around the movable cavity, and the inserts are combined 1.1.1 Directly or indirectly positioned on the support device 2.4 through the positioning structure 6, the positioning structure 6 is located on one side of the movable cavity, and the cold material cavity F is located on the side of the movable cavity. On the other side, there are two cold material cavities F, and the maximum distance between the four molding surfaces 1.12.1 around the moving mold core 1.12 and the insert combination 1.1.1 is T3, the moving mold The minimum distance between the core 1.12 and the fixed mold core 2.1 is T4, T3≥T4.

在其他实施例中，本实用新型包括中框的手机后盖胚料的成型模具还包括排气装置，所述第二次移动机构1.1包括移动承载装置、镶件组合1.1.1和连接件，所述镶件组合1.1.1通过所述连接件固定在所述移动承载装置上，所述镶件组合 1.1.1、所述移动模模芯1.12和所述固定模模芯2.1组成活动型腔，所述活动型腔与所述冷料腔F连通，所述排气装置设在所述活动型腔周围，所述镶件组合 1.1.1直接或者间接地通过所述定位结构6定位在所述支撑装置2.4上，所述定位结构6位于所述活动型腔的一侧，所述冷料腔F位于所述活动型腔的另一侧，所述冷料腔F有一个，所述移动模模芯1.12周围的四个成型面1.12.1与镶件组合1.1.1之间的最大距离为T3,所述移动模模芯1.12和所述固定模模芯2.1之间的最小距离为T4,T3≥T4。In other embodiments, the molding die of the mobile phone back cover blank of the middle frame of the present invention further includes an exhaust device, and the second moving mechanism 1.1 includes a moving bearing device, an insert assembly 1.1.1 and a connecting piece, The insert combination 1.1.1 is fixed on the moving carrying device through the connecting piece, and the insert combination 1.1.1, the movable mold core 1.12 and the fixed mold core 2.1 form a movable cavity , the movable cavity is communicated with the cold material cavity F, the exhaust device is arranged around the movable cavity, and the insert assembly 1.1.1 is directly or indirectly positioned through the positioning structure 6. On the support device 2.4, the positioning structure 6 is located on one side of the movable cavity, the cold material cavity F is located on the other side of the movable cavity, there is one cold material cavity F, and the moving The maximum distance between the four molding surfaces 1.12.1 around the mold core 1.12 and the insert combination 1.1.1 is T3, and the minimum distance between the movable mold core 1.12 and the fixed mold core 2.1 is T4 , T3≥T4.

在本实施例中，本实用新型包括中框的手机后盖胚料的成型模具还包括注料结构9，所述排气装置(附图中未标注出来)包括气槽(附图中未标注出来)、排气间隙(附图中未标注出来)和排气通道(附图中未标注出来)，所述排气间隙与所述气槽联通，所述排气间隙分为两个或者两个以上，所述每一个排气间隙的大小根据所述排气间隙所在模具位置的不同来设定一个所述注料结构9与两个所述冷料腔F之间呈现三角形、接近等腰三角形或者接近等边三角形的形状，所述冷料腔F位于所述固定模模芯2.1与所述镶件组合1.1.1之间，所述冷料腔 F的腔体主要位于所述镶件组合1.1.1内。In this embodiment, the molding die of the mobile phone back cover blank of the present invention including the middle frame also includes a material injection structure 9, and the exhaust device (not marked in the drawings) includes an air groove (not marked in the drawings). out), an exhaust gap (not marked in the drawings) and an exhaust channel (not marked in the drawings), the exhaust gap communicates with the air groove, and the exhaust gap is divided into two or two More than one, the size of each exhaust gap is set according to the position of the mold where the exhaust gap is located. The injection structure 9 and the two cold material cavities F are in a triangle shape, which is close to isosceles The shape of a triangle or close to an equilateral triangle, the cold material cavity F is located between the fixed mold core 2.1 and the insert assembly 1.1.1, and the cavity of the cold material cavity F is mainly located in the insert piece Combination within 1.1.1.

在其他实施例中，本实用新型包括中框的手机后盖胚料的成型模具还包括注料结构9，所述排气装置包括气槽、排气间隙和排气通道，所述排气间隙与所述气槽联通，所述排气间隙分为两个或者两个以上，所述每一个排气间隙的大小根据所述排气间隙所在模具位置的不同来设定一个所述注料结构9与两个所述冷料腔F之间呈现三角形、接近等腰三角形或者接近等边三角形的形状，所述冷料腔F位于所述固定模模芯2.1与所述镶件组合1.1.1之间，所述冷料腔F的腔体主要位于所述固定模模芯2.1内。In other embodiments, the molding die of the mobile phone back cover blank including the middle frame of the present invention further includes a material injection structure 9, and the exhaust device includes an air groove, an exhaust gap and an exhaust channel, and the exhaust gap It communicates with the air groove, the exhaust gap is divided into two or more, and the size of each exhaust gap is set according to the position of the mold where the exhaust gap is located. 9 and the two cold material cavities F are in the shape of a triangle, close to an isosceles triangle or close to an equilateral triangle, and the cold material cavity F is located in the fixed mold core 2.1 and the insert combination 1.1.1 In between, the cavity of the cold material cavity F is mainly located in the fixed mold core 2.1.

在本实施例中，本实用新型包括中框的手机后盖胚料的成型模具的所述排气间隙的大小从离模具的进料口最近端到离模具的进料口最远端依次变化或者所述排气间隙的大小从模具成型最容易的位置到模具成型最难的位置依次变化。In this embodiment, the size of the exhaust gap of the molding die of the mobile phone back cover blank of the present invention including the middle frame varies sequentially from the nearest end of the feed port of the die to the farthest end of the feed port of the die Alternatively, the size of the vent gap varies sequentially from the position where the mold is the easiest to form to the position where the mold is the most difficult.

在本实施例中，本实用新型包括中框的手机后盖胚料的成型模具的所述定位结构6包括唧嘴镶件6.1、进料口镶件6.2和定位销6.3，所述唧嘴镶件6.2通过定位销6.3安装在所述固定模2的中心位置，所述进料口镶件6.2通过定位销 6.3安装在所述移动模1的中心位置；In this embodiment, the positioning structure 6 of the molding die of the mobile phone back cover blank of the middle frame of the present invention includes a nozzle insert 6.1, a feed port insert 6.2 and a positioning pin 6.3. The component 6.2 is installed at the center position of the fixed mold 2 through the positioning pin 6.3, and the feed port insert 6.2 is installed at the center position of the movable mold 1 through the positioning pin 6.3;

在本实施例中，本实用新型包括中框的手机后盖胚料的成型模具的所述活动型腔是两个。In this embodiment, the present invention includes two movable cavities of the forming mold for the blank of the mobile phone back cover of the middle frame.

在其他实施例中，本实用新型包括中框的手机后盖胚料的成型模具的所述活动型腔是一个。In other embodiments, the present invention includes one movable cavity of the forming mold for the blank of the mobile phone back cover of the middle frame.

在其他实施例中，本实用新型包括中框的手机后盖胚料的成型模具的所述活动型腔是俩个个以上。In other embodiments, the present invention includes two or more movable cavities of the forming mold for the blank of the mobile phone back cover of the middle frame.

在本实施例中，本实用新型包括中框的手机后盖胚料的成型模具的所述排气间隙的大小为L，L＝0.025mm；In this embodiment, the size of the exhaust gap of the molding die of the mobile phone back cover blank of the present invention including the middle frame is L, where L=0.025mm;

本实用新型包括中框的手机后盖胚料的成型模具生产薄壁产品导光板的工作过程如下：The working process of the utility model for producing the light guide plate of the thin-walled product by the molding die for the blank of the mobile phone back cover of the middle frame is as follows:

本实用新型包括中框的手机后盖胚料的成型模具使用易相互分离复合材料生产手机后盖的工作过程如下：The utility model includes the forming mold of the mobile phone back cover blank of the middle frame, and the working process of producing the mobile phone back cover by using the composite materials that are easy to separate from each other is as follows:

手机后盖需要同时具有硬度高和强度大的性能，硬度高解决手机后盖耐磨和较少划痕的使用效果，强度大解决手机后盖耐摔和耐裂的使用效果；The back cover of the mobile phone needs to have the properties of high hardness and high strength at the same time.

聚甲基丙烯酸甲酯，即poly methyl methacrylate，简称PMMA，又称做压克力、亚克力或有机玻璃，具有较高透明度和光亮度，耐热性好，并有坚韧，质硬，刚性特点，用作手机后盖成型原料可以满足手机后盖耐磨和较少划痕的使用效果；Polymethyl methacrylate, or poly methyl methacrylate, referred to as PMMA, also known as acrylic, acrylic or plexiglass, has high transparency and brightness, good heat resistance, and has the characteristics of toughness, hardness and rigidity. It can be used as the molding material for the back cover of mobile phones to meet the wear resistance and less scratches of the back cover of mobile phones;

聚碳酸酯，简称PC，是分子链中含有碳酸酯基的高分子聚合物，一种强韧的热塑性树脂，抗冲击性能好，用作手机后盖成型原料可以满足手机后盖耐摔和耐裂的使用效果；Polycarbonate, referred to as PC, is a high molecular polymer containing carbonate groups in the molecular chain. It is a tough thermoplastic resin with good impact resistance. It can be used as a raw material for mobile phone back covers to meet the requirements of drop and crack resistance of mobile phone back covers. the use effect;

为了同时满足手机后盖硬度高和强度大的性能，可以使用PMMA+PC复合材料成型手机后盖，但是，在传统PMMA+PC复合材料成型工艺中注入速度范围为500mm/s以上，压力范围为2800-3000kgf/cm2，由于注料的速度快、压力大导致 PMMA与PC容易相互分离，成型难度大，良率低；In order to meet the high hardness and strength of the mobile phone back cover at the same time, PMMA+PC composite material can be used to form the mobile phone back cover. However, in the traditional PMMA+PC composite material molding process, the injection speed range is above 500mm/s, and the pressure range is 2800-3000kgf/cm 2 , due to the fast injection speed and high pressure, PMMA and PC are easy to separate from each other, forming difficult and low yield;

本实用新型包括中框的手机后盖胚料的成型模具由于调节模具相应产品对应部位的温度，移动模模芯和固定模模芯均设有五个成型面，并且移动模模芯周围的四个成型面与镶件组合之间的最大距离≥移动模模芯和所述固定模模芯之间的最小距离，使手机后盖和手机中框为一体式，过度自然，降低成本，并且中框一体式手机后盖胚料外观比非一体式的漂亮，由于设有活动型腔和冷料腔可以在相对于传统成型工艺低速低压的条件下成型，由于注料的速度相对较慢、压力相对较小，PMMA与PC不容易相互分离，成型难度变小，良率大大提高。In the utility model, the forming mold of the mobile phone back cover blank of the middle frame adjusts the temperature of the corresponding part of the corresponding product of the mold, the movable mold core and the fixed mold core are provided with five molding surfaces, and four surrounding The maximum distance between each molding surface and the combination of the inserts ≥ the minimum distance between the movable mold core and the fixed mold core, so that the back cover of the mobile phone and the middle frame of the mobile phone are integrated, which is excessively natural, reduces costs, and The frame-integrated mobile phone back cover blank has a more beautiful appearance than the non-integrated one. Because of the movable cavity and the cold material cavity, it can be formed at low speed and low pressure compared with the traditional molding process. Due to the relatively slow injection speed and pressure. Relatively small, PMMA and PC are not easily separated from each other, the molding difficulty becomes smaller, and the yield rate is greatly improved.

本实用新型包括中框的手机后盖胚料的成型模具使用使用PMMA+PC复合材料生产手机后盖过程如下：The utility model includes the molding die of the mobile phone back cover blank of the middle frame and uses the PMMA+PC composite material to produce the mobile phone back cover. The process is as follows:

在本实施例中，包括中框的手机后盖胚料的成型工艺，原材料为PMMA+PC 的复合材料，首先，将PMMA+PC的复合材料烘干，输送到注塑机，将PMMA+PC 的复合材料由固态转化为液态，第二，调节模具相应产品对应部位的温度，达到中框的手机后盖胚料最佳成型条件，移动模模芯1.12周围成型面1.12.1的温度低于移动模模芯1.12中间成型面1.12.2的温度，固定模模芯周围成型面2.1.1 的温度低于固定模模芯中间成型面2.1.2的温度，镶件组合1.1.1的温度低于移动模模芯中间成型面1.12.2的温度或者低于固定模模芯中间成型面2.1.2的温度，第三，由移动模1、固定模2和镶件组合1.1.1组成活动型腔A，固定模模芯2.1与镶件组合1.1.1组成所述冷料腔F，所述移动模向所述固定模方向移动 F1，当所述移动模接触到所述固定模时F2，此时组成的活动型腔容积最大，移动模模芯1.12周围的四个成型面1.12.1与镶件组合1.1.1之间的最大距离为 T3，固定模模芯2.1四个成型面2.1.1与相邻的移动模模芯1.12周围的四个成型面1.12.1之间的最大距离为T4，第四，移动模1继续移动直至停止F3，达到合模状态，此时形成活动型腔D，活动型腔D容积最小，第五，在设备上输入包括中框的手机后盖胚料的相应参数，使移动模移动到对应的位置F4，调节活动型腔的容积形成活动型腔B，使活动型腔B处于工作状态，使活动型腔的容积大于包括中框的手机后盖胚料的容积，因此原料流动的阻力小使原料容易流动，从而实现包括中框的手机后盖胚料容易成型，导致包括中框的手机后盖胚料内应力好、外观漂亮、厚度均匀、复合材料不易分离，第六，将步骤一中融化好的液态原料以一定速度和压力注入到活动型腔C，此时第二次移动机构相对于所述移动模的距离为L3，注入速度范围为180-330mm/s，压力范围为1500-2000kgf/cm2，在本实施例中，速度为300mm/s，压力为1800kgf/cm2，第七，移动模1开始移动F5，并继续保持注料，移动模1继续移动F6，活动型腔容积由大变小至包括中框的手机后盖胚料要求体积，形成活动型腔E，此时第二次移动机构相对于所述移动模的距离为L4，L0＞L2＞L3＞L4≥L1，移动模1停止移动，此时移动模模芯1.12与固定模模芯2.1之间的距离为T5，T4＝T3≥T5，保证包括中框的手机后盖胚料成型所需要的原料充足，当满足包括中框的手机后盖胚料所需原料后，停止注料，此时，根据包括中框的手机后盖胚料对原料的需求量将多余的原料回抽，同时冷却的液态原料流动至冷料腔F，减少冷料对产品的影响，第八，包括中框的手机后盖胚料冷却固化成型，所述移动模后退F7，所述弹簧弹开所述第二次移动机构，第二次移动机构相对于移动模向所述固定模方向移动F8，打开活动型腔，取出产品。在本实施例中，本实用新型包括中框的手机后盖胚料的成型工艺的第六步将液态材料注入所述活动型腔C与第七步所述活动型腔工作这两个步骤的先后顺序是在第六步将液态材料注入所述活动型腔C过程中开始第七步动作，即所述活动型腔开始工作，活动型腔容积由大变小至包括中框的手机后盖胚料要求体积，形成活动型腔E，所述活动型腔A的容积>所述活动型腔B 的容积>所述活动型腔C的容积>所述活动型腔D的容积。In this embodiment, including the molding process of the blank of the mobile phone back cover of the middle frame, the raw material is the composite material of PMMA+PC. First, the composite material of PMMA+PC is dried and transported to an injection molding machine, and the The composite material is transformed from a solid state to a liquid state. Second, adjust the temperature of the corresponding part of the mold to achieve the best molding conditions for the mobile phone back cover blank in the middle frame. The temperature of the molding surface 1.12.1 around the moving mold core 1.12 is lower than the moving mold The temperature of the middle molding surface 1.12.2 of the mold core 1.12, the temperature of the molding surface 2.1.1 around the fixed mold core is lower than the temperature of the middle molding surface 2.1.2 of the fixed mold core, and the temperature of the insert combination 1.1.1 is lower than The temperature of the middle molding surface 1.12.2 of the movable mold core is or is lower than the temperature of the middle molding surface 2.1.2 of the fixed mold core. Third, the movable mold cavity is composed of the movable mold 1, the fixed mold 2 and the insert combination 1.1.1 A, the fixed mold core 2.1 and the insert combination 1.1.1 form the cold material cavity F, the moving mold moves to the direction of the fixed mold F1, when the moving mold contacts the fixed mold F2, this When the volume of the movable cavity is the largest, the maximum distance between the four molding surfaces 1.12.1 around the moving mold core 1.12 and the insert combination 1.1.1 is T3, and the four molding surfaces 2.1.1 of the fixed mold core 2.1 The maximum distance between the four molding surfaces 1.12.1 around the adjacent moving mold core 1.12 is T4. Fourth, the moving mold 1 continues to move until it stops at F3, and the mold clamping state is reached. At this time, the movable cavity D is formed. , the volume of the movable cavity D is the smallest. Fifth, enter the corresponding parameters of the mobile phone back cover blank including the middle frame on the device, so that the movable mold moves to the corresponding position F4, and adjust the volume of the movable cavity to form the movable cavity B. Make the movable cavity B in the working state, so that the volume of the movable cavity is larger than the volume of the mobile phone back cover blank including the middle frame, so the resistance to the flow of the raw material is small and the raw material is easy to flow, so as to realize the mobile phone back cover blank including the middle frame. It is easy to form, resulting in good internal stress, beautiful appearance, uniform thickness, and difficult separation of composite materials. Sixth, the liquid raw material melted in step 1 is injected into the movable cavity at a certain speed and pressure. C. At this time, the distance between the second moving mechanism and the moving die is L3, the injection speed range is 180-330mm/s, and the pressure range is 1500-2000kgf/cm 2 . In this embodiment, the speed is 300mm/ s, the pressure is 1800kgf/cm 2 , seventh, the mobile mold 1 starts to move F5, and continues to keep the injection, the mobile mold 1 continues to move F6, and the movable cavity volume decreases from large to small to include the middle frame of the mobile phone back cover blank The volume is required to form the movable cavity E. At this time, the distance between the second moving mechanism and the moving mold is L4, L0>L2>L3>L4≥L1, the moving mold 1 stops moving, and the moving mold core 1.12 The distance from the fixed mold core 2.1 is T5, T4=T3≥T5, to ensure that the blank of the back cover of the mobile phone including the middle frame is The raw materials required for the model are sufficient. When the raw materials required for the mobile phone back cover blank including the middle frame are met, the injection is stopped. At this time, the excess raw materials are returned according to the demand for raw materials of the mobile phone back cover blank including the middle frame. At the same time, the cooled liquid raw material flows to the cold material cavity F, which reduces the influence of the cold material on the product. Eighth, the blank of the mobile phone back cover including the middle frame is cooled and solidified. For the second moving mechanism, the second moving mechanism moves F8 relative to the moving mold in the direction of the fixed mold, opens the movable cavity, and takes out the product. In this embodiment, the present invention includes the sixth step of the molding process of the middle frame mobile phone back cover blank, the liquid material is injected into the movable cavity C and the seventh step of the movable cavity working. The sequence is to start the seventh step in the process of injecting the liquid material into the movable cavity C in the sixth step, that is, the movable cavity starts to work, and the volume of the movable cavity changes from large to small to include the mobile phone back cover of the middle frame. The blank requires a volume to form a movable cavity E, the volume of the movable cavity A > the volume of the movable cavity B > the volume of the movable cavity C > the volume of the movable cavity D.

与现有技术相比较，本实用新型具有以下有益效果：本实用新型的包括中框的手机后盖胚料的成型模具由于移动模模芯和固定模模芯均设有五个成型面，并且移动模模芯周围的四个成型面与镶件组合之间的最大距离≥移动模模芯和所述固定模模芯之间的最小距离，使手机后盖和手机中框为一体式，过度自然，减少生产工序，降低成本，并且中框一体式手机后盖胚料外观比非一体式的漂亮，由于设有活动型腔和冷料腔，使活动型腔停止压缩前的容积大于产品的体积，冷却的液态原料容易流动至冷料腔，冷料腔以外的成型手机后盖及其中框的活动型腔内的液态原料流动均匀，手机后盖及其中框在低速或低压下容易成型，而且产品内应力好、外观漂亮、厚度均匀、复合材料不易相互分离。Compared with the prior art, the present utility model has the following beneficial effects: the forming die of the mobile phone back cover blank including the middle frame of the present utility model has five forming surfaces due to the movable die core and the fixed die core, and The maximum distance between the four molding surfaces around the movable mold core and the combination of the inserts ≥ the minimum distance between the movable mold core and the fixed mold core, so that the back cover of the mobile phone and the middle frame of the mobile phone are integrated. Naturally, the production process is reduced, the cost is reduced, and the appearance of the middle-frame integrated mobile phone back cover blank is more beautiful than the non-integrated one. Because of the movable cavity and the cold material cavity, the volume of the movable cavity before the compression is stopped is larger than that of the product. Volume, the cooled liquid material can easily flow to the cold material cavity, and the liquid material in the movable cavity of the molded mobile phone back cover and the middle frame outside the cold material cavity flows evenly, and the mobile phone back cover and the middle frame are easy to be formed at low speed or low pressure, Moreover, the product has good internal stress, beautiful appearance, uniform thickness, and the composite materials are not easy to separate from each other.

以上所揭露的仅为本实用新型的较佳实施例而已，当然不能以此来限定本实用新型之权利范围，因此依本实用新型申请专利范围所作的等同变化，仍属本实用新型所涵盖的范围。What is disclosed above is only the preferred embodiment of the present invention, of course, it cannot limit the scope of rights of the present invention. Therefore, the equivalent changes made according to the scope of the present invention are still covered by the present invention. scope.

Claims (10)

1. A forming die for a mobile phone rear cover blank comprising a middle frame is characterized by comprising a moving die and a fixed die, wherein the moving die is provided with a moving die supporting device, the fixed die is provided with a fixed die supporting device, the moving die and the fixed die are matched with each other, the moving die is provided with a moving die core, the fixed die is provided with a fixed die core, the moving die further comprises a guide assembly, a water channel device, a cold material cavity and a positioning structure, the moving die comprises a second moving mechanism and a limiting device, the second moving mechanism is movably connected with the moving die through the guide assembly and the limiting device, the die core of the moving die is positioned on the supporting device through the positioning structure, the die core of the fixed die is positioned on the supporting device through the positioning structure, the water channel device is distributed in the moving die and in the fixed die, the movable mould core is provided with five forming surfaces, included angles between the four surrounding forming surfaces and the middle forming surface are larger than or equal to 90 degrees, the fixed mould core is provided with five forming surfaces, and included angles between the four surrounding forming surfaces and the middle forming surface are larger than or equal to 90 degrees.
2. The mold for molding a mobile phone rear cover blank comprising a middle frame according to claim 1, wherein: the secondary moving mechanism comprises a moving bearing device, an insert combination and a connecting piece, the insert combination is fixed on the moving bearing device through the connecting piece, the insert combination, the moving die core and the fixed die core form a movable cavity, the movable cavity is communicated with the cold material cavity, the exhaust device is arranged around the movable cavity, the insert combination is directly or indirectly positioned on the supporting device through the positioning structure, the positioning structure is positioned on one side of the movable cavity, the cold material cavity is positioned on the other side of the movable cavity and is communicated with the movable cavity, one or two cold material cavities are arranged, the maximum distance between four forming surfaces around the moving die core and the insert combination is T3, and the minimum distance between the moving die core and the fixed die core is T4, t3 is more than or equal to T4.
3. The mold for molding a mobile phone rear cover blank comprising a middle frame according to claim 2, wherein: the mold comprises a fixed mold core and an insert combination, and is characterized by further comprising an injection structure, wherein the exhaust device comprises an air groove, an exhaust gap and an exhaust channel, the exhaust gap is communicated with the air groove, the exhaust gap is divided into two or more than two, the size of each exhaust gap is set according to the position of a mold where the exhaust gap is located, the shape of a triangle, a shape close to an isosceles triangle or a shape close to an equilateral triangle is formed between one injection structure and two cold material cavities, the cold material cavities are located between the fixed mold core and the insert combination, and the cavities of the cold material cavities are mainly located in the fixed mold core or the insert combination.
4. The mold for molding a mobile phone rear cover blank comprising a middle frame according to claim 3, wherein: the size of the exhaust gap is changed from the most proximal end of the feed inlet to the most distal end of the feed inlet, or the size of the exhaust gap is changed from the position where the mold is most easily molded to the position where the mold is most difficult to mold.
5. The mold for molding a mobile phone rear cover blank comprising a middle frame according to claim 1, wherein: the positioning structure comprises a squirt nozzle insert and a feeding port insert, the squirt nozzle insert is installed at the central position of the fixed die through a positioning pin, and the feeding port insert is installed at the central position of the movable die through a positioning pin.
6. The mold for molding a mobile phone rear cover blank comprising a middle frame according to claim 2, wherein: the positioning structure comprises a squirt nozzle insert and a feeding port insert, the squirt nozzle insert is installed at the central position of the fixed die through a positioning pin, and the feeding port insert is installed at the central position of the movable die through a positioning pin.
7. The mold for molding a mobile phone rear cover blank comprising a middle frame according to claim 3, wherein: the positioning structure comprises a squirt nozzle insert and a feeding port insert, the squirt nozzle insert is installed at the central position of the fixed die through a positioning pin, and the feeding port insert is installed at the central position of the movable die through a positioning pin.
8. The mold for molding a mobile phone rear cover blank comprising a middle frame according to claim 4, wherein: the positioning structure comprises a squirt nozzle insert and a feeding port insert, the squirt nozzle insert is installed at the central position of the fixed die through a positioning pin, and the feeding port insert is installed at the central position of the movable die through a positioning pin.
9. The mold for molding a mobile phone rear cover blank comprising a middle frame according to claim 8, wherein: the number of the movable cavities is one or more than one.
10. The mold for molding a mobile phone rear cover blank comprising a middle frame according to claim 9, wherein: the size of the exhaust gap is L, and L is more than or equal to 0.005mm and less than or equal to 0.05 mm.
CN201920822091.5U 2019-05-30 2019-05-30 Forming die of lid stock behind cell-phone including center Expired - Fee Related CN211221771U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110126203A (en) * 2019-05-30 2019-08-16 开平市盈光机电科技有限公司 A kind of molding die of the cell phone rear cover embryo material including center

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110126203A (en) * 2019-05-30 2019-08-16 开平市盈光机电科技有限公司 A kind of molding die of the cell phone rear cover embryo material including center

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