CN110126202A - A kind of mold with active type chamber - Google Patents
A kind of mold with active type chamber Download PDFInfo
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- CN110126202A CN110126202A CN201910467735.8A CN201910467735A CN110126202A CN 110126202 A CN110126202 A CN 110126202A CN 201910467735 A CN201910467735 A CN 201910467735A CN 110126202 A CN110126202 A CN 110126202A
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- 238000013022 venting Methods 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract description 13
- 230000006835 compression Effects 0.000 abstract description 7
- 238000007906 compression Methods 0.000 abstract description 7
- 239000011344 liquid material Substances 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 20
- 238000002347 injection Methods 0.000 description 18
- 239000007924 injection Substances 0.000 description 18
- 238000010586 diagram Methods 0.000 description 13
- 238000001746 injection moulding Methods 0.000 description 13
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 12
- 238000000465 moulding Methods 0.000 description 11
- 239000007788 liquid Substances 0.000 description 10
- 239000004417 polycarbonate Substances 0.000 description 10
- 239000004926 polymethyl methacrylate Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 229920003023 plastic Polymers 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000012994 photoredox catalyst Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 229920005372 Plexiglas® Polymers 0.000 description 1
- 125000005587 carbonate group Chemical group 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/34—Moulds having venting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/36—Moulds having means for locating or centering cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C2045/2697—Deformed geometry of the cavity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/36—Moulds having means for locating or centering cores
- B29C2045/363—Moulds having means for locating or centering cores using a movable core or core part
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
本发明提供一种具有活动型腔的模具，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，其特征在于，还包括导向组件、水道装置和定位结构，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。本发明的具有活动型腔的模具由于设有活动型腔，可以根据产品的需求来调整活动型腔的大小，使活动型腔停止压缩前的容积大于产品的体积，在较大容积的活动型腔中液态原料容易流动，产品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。
The invention provides a mold with a movable cavity, which includes a movable mold and a fixed mold, the movable mold is provided with a movable mold support device, the fixed mold is provided with a fixed mold support device, the movable mold and the fixed mold The molds cooperate with each other, the movable mold is provided with a movable mold core, and the fixed mold is provided with a fixed mold core, which is characterized in that it also includes a guide assembly, a waterway device and a positioning structure, and the movable mold includes a second A moving mechanism and a limiting device, the second moving mechanism is movably connected with the moving mold through the guide assembly and the limiting device. Since the mold with movable cavity of the present invention is provided with a movable cavity, the size of the movable cavity can be adjusted according to the requirements of the product, so that the volume of the movable cavity before stopping compression is greater than the volume of the product. The liquid material in the cavity is easy to flow, and the product is 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.
Description
技术领域technical field
本发明涉及一种模具，尤其涉及一种具有活动型腔的模具。The invention relates to a mold, in particular to a mold with a movable cavity.
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 certain complex-shaped parts. Specifically, it refers to injecting the heated and melted plastic into the mold cavity under high pressure from the injection molding machine, and after cooling and solidifying, 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 two parts, the movable mold and the fixed mold. The movable mold is installed on the movable 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. Size cannot be changed. During injection molding, the movable mold and the fixed mold are closed to form the gating system and the cavity, and the movable mold and the fixed mold are separated to take out the plastic product when the mold is opened. In order to reduce the heavy workload of mold design and manufacturing, most 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 the 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 to cause 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.
发明内容Contents of the invention
基于现有技术的不足，本发明创造的目的在于提供一种具有活动型腔的模具，由于其使用活动型腔，而且可以根据所需成型产品规格和尺寸的不同来调整活动型腔的大小，在注料前或者注料时，活动型腔的容积可以大于所述成型产品的体积，因此原料在活动型腔内流动的阻力会变小，使原料在活动型腔内容易流动，从而实现产品容易成型，导致产品内应力好、外观漂亮、厚度均匀、复合材料不易分离。Based on the deficiencies of the prior art, the purpose of the present invention is to provide a mold with a movable cavity, because it uses a movable cavity, and the size of the movable cavity can be adjusted according to the specifications and sizes of the required molded products. Before or during injection, the volume of the active cavity can be larger than the volume of the molded product, so the resistance of the raw material to flow in the active cavity will become smaller, making it easy for the raw material to flow in the active cavity, thereby realizing the product It is easy to form, resulting in good internal stress, beautiful appearance, uniform thickness, and the composite material is not easy to separate.
为了实现上述目的，本发明提供了一种具有活动型腔的模具，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，其特征在于，还包括导向组件、水道装置和定位结构，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移动模的所述支撑装置上，所述固定模的模芯通过所述定位结构定位在所述固定模的所述支撑装置上，所述水道装置分布在所述移动模内和所述固定模内。In order to achieve the above object, the present invention provides a mold with a movable cavity, which includes a movable mold and a fixed mold, the movable mold is provided with a movable mold supporting device, and the fixed mold is provided with a fixed mold supporting device, the The movable mold and the fixed mold cooperate with each other, the movable mold is provided with a movable mold core, and the fixed mold is provided with a fixed mold core. It is characterized in that it also includes a guide assembly, a waterway device and a positioning structure. The moving mold includes a second moving mechanism and a limiting device, the second moving mechanism is movably connected with the moving mold through the guide assembly and the limiting device, and the mold core of the moving mold passes through the positioning The structure is positioned on the support device of the movable mold, the mold core of the fixed mold is positioned on the support device of the fixed mold through the positioning structure, and the water channel device is distributed in the movable mold and the stent inside.
作为本发明具有活动型腔的模具的改进，本发明具有活动型腔的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移动模的所述支撑装置上。As an improvement of the mold with movable cavity of the present invention, the mold with movable cavity of the present invention also includes an exhaust device, and the second moving mechanism includes a mobile carrying device, an insert assembly and a connecting piece, and the insert assembly The connecting piece is fixed on the mobile carrying device, the insert combination, the moving mold core and the fixed mold core form a movable cavity, and the exhaust device is arranged in the movable cavity Around, the insert assembly is directly or indirectly positioned on the supporting device of the moving mold through the positioning structure.
作为本发明具有活动型腔的模具的改进，本发明具有活动型腔的模具的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，所述排气间隙有两个或者两个以上，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。As an improvement of the mold with a movable cavity of the present invention, the exhaust device of the mold with a movable cavity of the present invention includes an air groove, an exhaust gap and an exhaust channel, and the exhaust gap communicates with the air groove, There are two or more exhaust gaps, and the size of each exhaust gap is set according to the position of the mold where the exhaust gap is located.
作为本发明具有活动型腔的模具的改进，本发明具有活动型腔的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。As an improvement of the mold with a movable cavity of the present invention, the size of the exhaust gap of the mold with a movable cavity in the present invention changes in sequence from the nearest end to the feed inlet of the mold to the farthest end from the feed inlet of the mold or The size of the exhaust gap changes sequentially from the position where the mold is the easiest to form to the position where the mold is the most difficult to form.
作为本发明具有活动型腔的模具的改进，本发明具有活动型腔的模具的所述定位结构包括唧嘴镶件、进料口镶件和定位销，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 mold with movable cavity of the present invention, the positioning structure of the mold with movable cavity of the present invention includes a nozzle insert, a feed inlet insert and a positioning pin, and the nozzle insert is installed through the positioning pin At the central position of the fixed mold, the feed inlet insert is installed at the central position of the movable mold through positioning pins.
作为本发明具有活动型腔的模具的改进，本发明具有活动型腔的模具的所述活动型腔是一个或者一个以上。As an improvement of the mold with movable cavity of the present invention, the movable cavity of the mold with movable cavity of the present invention is one or more than one.
作为本发明具有活动型腔的模具的改进，本发明具有活动型腔的模具的所述排气间隙的大小为L，0.005mm≤L≤0.05mm。As an improvement of the mold with movable cavity of the present invention, the size of the exhaust gap of the mold with movable cavity of the present invention is L, 0.005mm≤L≤0.05mm.
与现有技术相比较，本发明具有活动型腔的模具具有以下有益效果：由于设有活动型腔，可以根据产品的需求来调整活动型腔的大小，使活动型腔停止压缩前的容积大于产品的体积，在较大容积的活动型腔中液态原料流动的阻力会变小，液态原料容易流动，产品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 mold with movable cavity of the present invention has the following beneficial effects: since the movable cavity is provided, the size of the movable cavity can be adjusted according to the demand of the product, so that the volume of the movable cavity before stopping compression is greater than The volume of the product, the resistance to the flow of liquid raw materials in a larger-volume active cavity will become smaller, the liquid raw materials will flow easily, and the product will be easy to form at low speed or low pressure, and the product has good internal stress, beautiful appearance, uniform thickness, and composite materials. Not easy to separate from each other.
附图说明Description of drawings
图1为本发明具有活动型腔的模具优选实施例中具有活动型腔的模具工作过程的第一步示意图。Fig. 1 is the schematic diagram of the first step of the working process of the mold with movable cavity in the preferred embodiment of the mold with movable cavity of the present invention.
图2为本发明具有活动型腔的模具优选实施例中具有活动型腔的模具工作过程的第二步示意图。Fig. 2 is a schematic diagram of the second step of the working process of the mold with movable cavity in the preferred embodiment of the mold with movable cavity in the present invention.
图3为本发明具有活动型腔的模具优选实施例中具有活动型腔的模具工作过程的第三步示意图。Fig. 3 is a schematic diagram of the third step of the working process of the mold with movable cavity in the preferred embodiment of the mold with movable cavity in the present invention.
图4为本发明具有活动型腔的模具优选实施例中具有活动型腔的模具工作过程的第四步示意图。Fig. 4 is a schematic diagram of the fourth step of the working process of the mold with movable cavity in the preferred embodiment of the mold with movable cavity in the present invention.
图5为本发明具有活动型腔的模具优选实施例中具有活动型腔的模具工作过程的第六步示意图。Fig. 5 is a schematic diagram of the sixth step of the working process of the mold with movable cavity in the preferred embodiment of the mold with movable cavity according to the present invention.
图6为本发明具有活动型腔的模具优选实施例中具有活动型腔的模具工作过程的第六步示意图。Fig. 6 is a schematic diagram of the sixth step of the working process of the mold with movable cavity in the preferred embodiment of the mold with movable cavity according to the present invention.
图7为本发明具有活动型腔的模具优选实施例中具有活动型腔的模具工作过程的第七步示意图。Fig. 7 is a schematic diagram of the seventh step of the working process of the mold with movable cavity in the preferred embodiment of the mold with movable cavity according to the present invention.
图8为本发明具有活动型腔的模具优选实施例中具有活动型腔的模具工作过程的第八步示意图。Fig. 8 is a schematic diagram of the eighth step of the working process of the mold with movable cavity in the preferred embodiment of the mold with movable cavity according to the present invention.
图9为本发明具有活动型腔的模具优选实施例的移动模的结构示意图。Fig. 9 is a schematic structural view of a movable mold of a preferred embodiment of a mold with a movable cavity according to the present invention.
图10为本发明具有活动型腔的模具优选实施例的固定模的结构示意图。Fig. 10 is a schematic structural view of a fixed mold of a preferred embodiment of a mold with a movable cavity according to the present invention.
图11为本发明具有活动型腔的模具优选实施例中的具有活动型腔的模具生产的产品导光板胚料的外观俯视图。Fig. 11 is a top view of the appearance of a light guide plate blank produced by the mold with a movable cavity in the preferred embodiment of the mold with a movable cavity according to the present invention.
图12为本发明具有活动型腔的模具优选实施例中的具有活动型腔的模具生产的产品手机后盖胚料的外观俯视图。Fig. 12 is a top view of the appearance of the mobile phone back cover blank produced by the mold with movable cavity in the preferred embodiment of the mold with movable cavity according to the present invention.
图13为本发明具有活动型腔的模具优选实施例的移动模的A-A剖面结构示意图。Fig. 13 is a schematic diagram of the A-A sectional structure of the movable mold of the preferred embodiment of the mold with a movable cavity in the present invention.
图14为本发明具有活动型腔的模具优选实施例的固定模的C-C剖面结构示意图。Fig. 14 is a C-C cross-sectional structure schematic diagram of a fixed mold of a preferred embodiment of a mold with a movable cavity according to the present invention.
图15为本发明具有活动型腔的模具优选实施例的移动模的A-A剖面结构示意图中M部的局部放大图。Fig. 15 is a partially enlarged view of part M in the A-A cross-sectional structure schematic diagram of the movable mold of the preferred embodiment of the mold with movable cavity in the present invention.
图16为本发明具有活动型腔的模具优选实施例的移动模与固定模合模以后的剖面结构示意图。Fig. 16 is a schematic cross-sectional structure diagram of the movable mold and the fixed mold in the preferred embodiment of the mold with movable cavity according to the present invention.
图17为本发明具有活动型腔的模具优选实施例的移动模与固定模合模以后的剖面结构示意图中K部的局部放大图。Fig. 17 is a partially enlarged view of part K in the schematic cross-sectional structure diagram of the preferred embodiment of the mold with movable cavity in the present invention after the movable mold and the fixed mold are mold-closed.
具体实施方式Detailed ways
本发明具有活动型腔的模具适用于生产薄壁产品、电池后盖、手机壳或光学类产品，使用的材料是高粘度材料或者低粘度材料，不容易相互分离的复合材料或者容易相互分离的复合材料。The mold with movable cavity of the present invention is suitable for producing thin-walled products, battery back covers, mobile phone shells or optical products, and the materials used are high-viscosity materials or low-viscosity materials, composite materials that are not easy to separate from each other or easy to separate from each other composite material.
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、图14、图15、图16和图17，详细描述本发明具有活动型腔的模具的优选实施例及其他实施例。Refer 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, Figure 14, Figure 15, Figure 16 and Figure 17. Describe in detail the preferred embodiment and other embodiments of the mold with movable cavity of the present invention.
本发明提供一种具有活动型腔的模具，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1.10，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，其特征在于，还包括导向组件3、水道装置5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，所述第二次移动机构1.1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1.12通过所述定位结构6定位在所述移动模1的所述支撑装置1.10上，所述固定模2的模芯2.1通过所述定位结构6定位在所述固定模2的所述支撑装置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。The invention provides a mold with a movable cavity, which includes a movable mold 1 and a fixed mold 2, the movable mold 1 is provided with a movable mold support device 1.10, and the fixed mold 2 is provided with a fixed mold support device 2.4, the 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 core 2.1, which is characterized in that it also includes a guide assembly 3, a water channel device 5 and positioning structure 6, the moving mold 1 includes a second moving mechanism 1.1 and a limiting device 1.2, and the second moving mechanism 1.1 passes through the guide assembly 3, the limiting device 1.2 and the moving The mold 1 is movably connected, the mold core 1.12 of the movable mold 1 is positioned on the support device 1.10 of the movable mold 1 through the positioning structure 6, and the mold core 2.1 of the fixed mold 2 is positioned through the positioning structure 6 Positioned on the support device 2.4 of the fixed mold 2, the water channel device 5 is distributed in the movable mold 1 and the fixed mold 2.
在本实施例中，本发明具有活动型腔的模具还包括排气装置8，所述第二次移动机构1.1包括移动承载装置1.1.1、镶件组合1.1.2和连接件1.1.3，所述镶件组合1.1.2通过所述连接件1.1.3固定在所述移动承载装置1.1.1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，所述排气装置8设在所述活动型腔周围，所述镶件组合1.1.2直接或者间接地通过所述定位结构6定位在所述移动模1所述支撑装置1.10上。In this embodiment, the mold with movable cavity of the present invention also includes an exhaust device 8, and the second moving mechanism 1.1 includes a moving carrier device 1.1.1, an insert assembly 1.1.2 and a connecting piece 1.1.3, The insert assembly 1.1.2 is fixed on the mobile carrying device 1.1.1 through the connecting piece 1.1.3, the insert assembly 1.1.1, the movable mold core 1.12 and the fixed mold The core 2.1 forms a movable mold cavity, the exhaust device 8 is arranged around the movable mold cavity, and the insert assembly 1.1.2 is directly or indirectly positioned on the support of the movable mold 1 through the positioning structure 6 On device 1.10.
在本实施例中，本发明具有活动型腔的模具的所述排气装置8包括气槽8.1和排气间隙8.2，所述排气间隙8.2与所述气槽8.1联通，所述排气间隙8.2有两个或者两个以上，所述每一个排气间隙8.2的大小根据所述排气间隙8.2所在模具位置的不同来设定。In this embodiment, the exhaust device 8 of the mold with a movable cavity in the present invention includes an air groove 8.1 and an exhaust gap 8.2, the exhaust gap 8.2 communicates with the air groove 8.1, and the exhaust gap There are two or more 8.2, and the size of each exhaust gap 8.2 is set according to the position of the mold where the exhaust gap 8.2 is located.
在本实施例中，本发明具有活动型腔的模具的所述排气间隙8.2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8.2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 8.2 of the mold with a movable cavity in the present invention changes sequentially from the nearest end to the feed inlet of the mold to the farthest end from the feed inlet of the mold or the exhaust gap 8.2 The size of the mold varies from the easiest position to the most difficult position.
在本实施例中，本发明具有活动型腔的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 mold with a movable cavity in the present invention includes a nozzle insert 6.1, a feed inlet insert 6.2 and a positioning pin 6.3, and the nozzle insert 6.2 is installed through the positioning pin 6.3 At the central position of the fixed mold 2, the inlet insert 6.2 is installed at the central position of the movable mold 1 through a positioning pin 6.3.
在本实施例中，本发明具有活动型腔的模具的所述活动型腔是二个。In this embodiment, there are two movable cavities in the mold with movable cavities of the present invention.
在本实施例中，本发明具有活动型腔的模具的所述排气间隙8.2的大小为L，L＝0.025mm。In this embodiment, the size of the exhaust gap 8.2 of the mold with movable cavity of the present invention is L, and L=0.025mm.
本发明具有活动型腔的模具生产薄壁产品导光板胚料的工作过程如下：The present invention has the working process of the mold production thin-walled light guide plate blank with movable cavity as follows:
导光板胚料的厚度为0.4mm，长为152mm，宽为70mm，原材料使用PC-1501，注塑机型号：住友即Sumitomo LGP180，螺杆直径为25mm。The thickness of the light guide plate blank is 0.4mm, the length is 152mm, and the width is 70mm. The raw material is PC-1501. The injection molding machine model is Sumitomo LGP180, and the screw diameter is 25mm.
现有的导光板胚料的成型都采用的是普通模具直接注塑，模具型腔的大小不能改变，直接往固定型腔内注料后，由柱塞或往复螺杆注射到闭合模具的模腔中形成制品的塑料加工方法。The existing light guide plate blanks are all formed by direct injection molding of ordinary molds. The size of the mold cavity cannot be changed. After the material is directly injected into the fixed cavity, it is injected into the cavity of the closed mold by a plunger or a reciprocating screw. A method of processing plastics to form an article.
普通模具直接注塑超薄产品导光板胚料，虽然注入的液态原料流动性好，但是由于超薄产品导光板胚料的成型型腔容积下、超薄，要以较高的压力进行注料，压力为2800kgf/cm2，高压导致成型的导光板胚料的内应力大，外观不好、进料口近端与远端厚度不均匀。Ordinary molds directly inject ultra-thin light guide plate blanks. Although the injected liquid raw materials have good fluidity, due to the low volume and ultra-thin molding cavity of ultra-thin light guide plate blanks, high pressure is required for injection. The pressure is 2800kgf/cm 2 , and the high pressure leads to large internal stress of the molded light guide plate blank, poor appearance, and uneven thickness at the near end and far end of the feed inlet.
在本实施例中，本发明具有活动型腔的模具的模具型腔的大小能够改变，使注料前或注料时活动型腔的容积大于产品的容积，所以可以以较高的速度较低的压力进行注入流动性好的液态原料，进料速度较高为1000mm/s，注料压力较低为1800kgf/cm，低压导致成型的导光板胚料的内应力小，外观好、进料口近端与远端厚度均匀。In this embodiment, the size of the mold cavity of the mold with movable cavity of the present invention can be changed, so that the volume of the movable cavity is greater than the volume of the product before or during injection, so it can be produced at a higher speed and lower The high pressure is used to inject liquid raw materials with good fluidity. The highest feeding speed is 1000mm/s, and the lowest injection pressure is 1800kgf/cm. The proximal and distal ends are uniform in thickness.
首先，将PC原材料烘干，输送到注塑机，将原材料由固态转化为液态。First, the PC raw material is dried and sent to the injection molding machine to convert the raw material from solid to liquid.
第二步移动模1向固定模2方向移动，详见附图2中的F1，开始合模。In the second step, the mobile mold 1 moves towards the fixed mold 2, see F1 in the accompanying drawing 2 for details, and start mold closing.
第三步当镶件组合1.1.1接触到固定模2时，由移动模1、固定模2和镶件组合1.1.1组成活动型腔A，详见附图3中的F2，此时活动型腔容积最大，同时第二次移动机构相对于所述移动模可移动的最大距离为L0。In the third step, when the insert combination 1.1.1 touches the fixed mold 2, the movable cavity A is composed of the movable mold 1, the fixed mold 2 and the insert combination 1.1.1. See F2 in attached drawing 3 for details. The cavity has the largest volume, and the maximum movable distance of the second moving mechanism relative to the moving mold is L0.
第四步所述移动模1继续向所述固定模2方向移动，直至所述移动模1与第二次移动机构1.1贴合，达到完全合模状态，详见附图4中的F3，此时形成活动型腔D，活动型腔D容积最小，此时第二次移动机构1.1相对于所述移动模1的距离为L1，L1＝0，同时设置所述移动模1的压缩参数。此过程是为了校正模具，让注塑机感应到模具的最小型腔的状态，如果没有让注塑机感应到正确的最小型腔的状态，将会使进料的量产生误差导致产品成型所需原料的量过多或过少。In the fourth step, the movable mold 1 continues to move toward the fixed mold 2 until the movable mold 1 fits with the second moving mechanism 1.1 and reaches a complete mold closing state. See F3 in Figure 4 for details. When the movable cavity D is formed, the volume of the movable cavity D is the smallest. At this time, the distance of the second moving mechanism 1.1 relative to the movable mold 1 is L1, and L1=0, and the compression parameters of the movable mold 1 are set at the same time. This process is to calibrate the mold so that the injection molding machine senses the state of the smallest cavity of the mold. If the injection molding machine does not sense the correct state of the smallest cavity, it will cause errors in the amount of feed and lead to the raw materials required for product molding. too much or too little.
第五步依据上述设置的所述移动模1的压缩参数，通过传感器1.4控制所述移动模1向所述第二次移动机构1.1相反方向移动的距离，调节活动型腔的容积形成活动型腔B，详见附图5中的F4，使活动型腔B处于工作状态，此时第二次移动机构相对于所述移动模1的距离为L2。The fifth step is to control the moving distance of the movable mold 1 to the opposite direction of the second moving mechanism 1.1 through the sensor 1.4 according to the compression parameters of the movable mold 1 set above, and adjust the volume of the movable mold cavity to form a movable mold cavity B, see F4 in Figure 5 for details, make the movable cavity B in the working state, at this time the distance of the second moving mechanism relative to the moving mold 1 is L2.
第六步将液态材料高速低压注入所述活动型腔C，此时第二次移动机构相对于所述移动模的距离为L3，详见附图6中的F5，注料速度为1000mm/s，注料压力为1800kgf/cm2。The sixth step is to inject the liquid material into the movable cavity C at high speed and low pressure. At this time, the distance between the second moving mechanism and the moving mold is L3. See F5 in attached drawing 6 for details, and the injection speed is 1000mm/s , the injection pressure is 1800kgf/cm 2 .
第七步所述移动模1移动，活动型腔容积由大变小至产品要求体积，形成活动型腔E，详见附图7中的F6，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。The moving mold 1 described in the seventh step moves, and the volume of the movable cavity changes from large to small to the required volume of the product to form the movable cavity E. See F6 in the accompanying drawing 7 for details. At this time, the second moving mechanism is relative to the moving The mode distance is L4, L0>L2>L3>L4≥L1.
第八步产品冷却固化成型，所述移动模向与所述固定模相反的方向移动，打开活动型腔，详见附图8中的F7，弹簧1.6将所述第二次移动机构1.1与所述移动模1弹开，所述第二次移动机构1.1相对于所述移动模1向所述固定模2方向移动，详见附图8中的F8，产品4从所述移动模取出。In the eighth step, the product is cooled and solidified, and the movable mold moves in the opposite direction to the fixed mold to open the movable mold cavity. See F7 in the accompanying drawing 8 for details, and the spring 1.6 connects the second moving mechanism 1.1 with the fixed mold. The movable mold 1 bounces off, and the second moving mechanism 1.1 moves toward the fixed mold 2 relative to the movable mold 1, see F8 in the accompanying drawing 8 for details, and the product 4 is taken out from the movable mold.
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，即注入一定量的液态原料后，所述活动型腔开始工作，所述移动模1开始移动，并继续保持注料，保证产品成型所需要的原料充足，当满足产品所需原料后，停止注料，活动型腔容积由大变小至产品要求体积，形成活动型腔E，所述移动模1停止移动，此时，根据产品对原料的需求量将多余的原料回抽，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E的容积≥所述活动型腔D的容积。The sequence of the two steps of injecting the liquid material into the active cavity C in the sixth step and working in the active cavity C in the seventh step is to start the seventh step in the process of injecting the liquid material into the active cavity C in the sixth step. Step action, that is, after injecting a certain amount of liquid raw materials, the movable cavity starts to work, the movable mold 1 starts to move, and continues to keep injecting materials to ensure that the raw materials required for product molding are sufficient. When the raw materials required for the product are met , stop the injection, the volume of the active cavity is changed from large to small to the volume required by the product, forming the active cavity E, and the movable mold 1 stops moving. The volume of the active cavity A>the volume of the active cavity B>the volume of the active cavity C>the volume of the active cavity E≥the volume of the active cavity D.
本发明具有活动型腔的模具使用易相互分离复合材料生产手机后盖胚料的工作过程如下：The mold with movable cavity of the present invention uses the composite material that is easy to separate from each other to produce the blank material of the back cover of the mobile phone. The working process is as follows:
手机后盖胚料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胚料耐磨和较少划痕的使用效果，强度大解决手机后盖胚料耐摔和耐裂的使用效果。Mobile phone back cover blanks need to have high hardness and high strength at the same time. High hardness solves the use effect of mobile phone back cover blanks for wear resistance and less scratches, and high strength solves the use effect of mobile phone back cover blanks for resistance to falling and cracking. .
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，用作手机后盖胚料成型原料可以满足手机后盖胚料耐磨和较少划痕的使用效果。Polymethyl methacrylate, namely 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, hard quality and rigidity. It can be used as a raw material for forming mobile phone back cover blanks to meet the wear-resistant and less scratch-resistant use of mobile phone back cover blanks.
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，用作手机后盖胚料成型原料可以满足手机后盖胚料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 cover blanks to meet the needs of mobile phone back cover blanks. The use effect of resistance to falling and cracking.
为了同时满足手机后盖胚料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胚料，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 high strength of the mobile phone back cover blank, PMMA+PC composite material can be used to form the mobile phone back cover blank. However, in the traditional PMMA+PC composite molding process, the injection speed range is above 500mm/s , 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, making molding difficult and low yield.
本发明具有活动型腔的模具由于使用活动型腔，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。The mold with movable cavity of the present invention can be formed under the condition of low speed and low pressure relative to the traditional molding process due to the use of movable cavity. Because the speed of injection is relatively slow and the pressure is relatively small, PMMA and PC are not easy to separate from each other. The molding difficulty becomes smaller, and the yield rate is greatly improved.
本发明具有活动型腔的模具使用使用PMMA+PC复合材料生产手机后盖胚料过程如下：The mold with movable cavity of the present invention uses PMMA+PC composite material to produce the blank material process of mobile phone back cover as follows:
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。The composite material of PMMA+PC is dried and transported to the injection molding machine to convert the composite material of PMMA+PC from solid to liquid.
第二步移动模1向固定模2方向移动，详见附图2中的F1，开始合模。In the second step, the mobile mold 1 moves towards the fixed mold 2, see F1 in the accompanying drawing 2 for details, and start mold closing.
第三步当镶件组合接触到固定模2时，由移动模1、固定模2和镶件组合1.1.1组成活动型腔A，详见附图3中的F2，此时活动型腔容积最大，同时第二次移动机构1.1相对于所述移动模1可移动的最大距离为L0。In the third step, when the insert combination touches the fixed mold 2, the movable mold cavity A is composed of the movable mold 1, the fixed mold 2 and the insert combination 1.1.1. See F2 in attached drawing 3 for details. At this time, the volume of the movable mold cavity At the same time, the maximum distance that the second moving mechanism 1.1 can move relative to the moving mold 1 is L0.
第四步所述移动模1继续向所述固定模2方向移动，直至所述移动模1与第二次移动机构1.1贴合，达到完全合模状态，详见附图4中的F3，此时形成活动型腔D，活动型腔D容积最小，此时第二次移动机构1.1相对于所述移动模1的距离为L1，L1＝0，同时设置所述移动模1的压缩参数。此过程是为了校正模具，让注塑机感应到模具的最小型腔的状态，如果没有让注塑机感应到正确的最小型腔的状态，将会使进料的量产生误差导致产品成型所需原料的量过多或过少。In the fourth step, the movable mold 1 continues to move toward the fixed mold 2 until the movable mold 1 fits with the second moving mechanism 1.1 and reaches a complete mold closing state. See F3 in Figure 4 for details. When the movable cavity D is formed, the volume of the movable cavity D is the smallest. At this time, the distance of the second moving mechanism 1.1 relative to the movable mold 1 is L1, and L1=0, and the compression parameters of the movable mold 1 are set at the same time. This process is to calibrate the mold so that the injection molding machine senses the state of the smallest cavity of the mold. If the injection molding machine does not sense the correct state of the smallest cavity, it will cause errors in the amount of feed and lead to the raw materials required for product molding. too much or too little.
第五步依据上述设置的所述移动模1的压缩参数，通过传感器1.4控制所述移动模1向所述第二次移动机构1.1相反方向移动的距离，调节活动型腔的容积形成活动型腔B，详见附图5中的F4，使活动型腔B处于工作状态，此时第二次移动机构相对于所述移动模的距离为L2。The fifth step is to control the moving distance of the movable mold 1 to the opposite direction of the second moving mechanism 1.1 through the sensor 1.4 according to the compression parameters of the movable mold 1 set above, and adjust the volume of the movable mold cavity to form a movable mold cavity B, see F4 in Figure 5 for details, make the movable cavity B in the working state, at this time the distance of the second moving mechanism relative to the moving mold is L2.
第六步将液态材料低速低压注入所述活动型腔C，此时第二次移动机构相对于所述移动模的距离为L3，详见附图6中的F5，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。The sixth step is to inject the liquid material into the movable cavity C at low speed and low pressure. At this time, the distance between the second moving mechanism and the moving mold is L3. See F5 in attached drawing 6 for details, and the injection speed range is 180-330mm /s, the pressure range is 1500-2000kgf/cm 2 , in this embodiment, the speed is 300mm/s, and the pressure is 1800kgf/cm 2 .
第七步所述移动模1移动，活动型腔容积由大变小至产品要求体积，形成活动型腔E，详见附图7中的F6，此时第二次移动机构1.1相对于所述移动模1的距离为L4，L0＞L2＞L3＞L4≥L1。The moving mold 1 described in the seventh step moves, and the volume of the movable cavity changes from large to small to the required volume of the product to form the movable cavity E. See F6 in the accompanying drawing 7 for details. At this time, the second moving mechanism 1.1 is relatively The distance of the moving module 1 is L4, L0>L2>L3>L4≥L1.
第八步产品冷却固化成型，所述移动模1向与所述固定模2相反的方向移动，打开活动型腔，详见附图8中的F7，弹簧1.6将所述第二次移动机构1.1与所述移动模1弹开，所述第二次移动机构1.1相对于所述移动模1向所述固定模2方向移动，详见附图8中的F8，产品4从所述移动模1取出。In the eighth step, the product is cooled and solidified, the movable mold 1 moves in the opposite direction to the fixed mold 2, and the movable cavity is opened, see F7 in the accompanying drawing 8 for details, and the spring 1.6 moves the second moving mechanism 1.1 Bounce away from the movable mold 1, the second moving mechanism 1.1 moves towards the fixed mold 2 relative to the movable mold 1, see F8 in the accompanying drawing 8 for details, the product 4 moves from the movable mold 1 take out.
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，即注入一定量的液态原料后，所述活动型腔开始工作，所述移动模1开始移动，并继续保持注料，保证产品成型所需要的原料充足，当满足产品所需原料后，停止注料，活动型腔容积由大变小至产品要求体积，形成活动型腔E，所述移动模1停止移动，此时，根据产品对原料的需求量将多余的原料回抽，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E的容积≥所述活动型腔D的容积。The sequence of the two steps of injecting the liquid material into the active cavity C in the sixth step and working in the active cavity C in the seventh step is to start the seventh step in the process of injecting the liquid material into the active cavity C in the sixth step. Step action, that is, after injecting a certain amount of liquid raw materials, the movable cavity starts to work, the movable mold 1 starts to move, and continues to keep injecting materials to ensure that the raw materials required for product molding are sufficient. When the raw materials required for the product are met , stop the injection, the volume of the active cavity is changed from large to small to the volume required by the product, forming the active cavity E, and the movable mold 1 stops moving. The volume of the active cavity A>the volume of the active cavity B>the volume of the active cavity C>the volume of the active cavity E≥the volume of the active cavity D.
与现有技术相比较，本发明具有以下有益效果：于设有活动型腔，可以根据产品的需求来调整活动型腔的大小，使活动型腔停止压缩前的容积大于产品的体积，在较大容积的活动型腔中液态原料流动的阻力会变小，液态原料容易流动，产品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 invention has the following beneficial effects: since the movable cavity is provided, the size of the movable cavity can be adjusted according to the demand of the product, so that the volume of the movable cavity before stopping compression is larger than the volume of the product, and the The resistance to the flow of liquid raw materials in the large-volume movable cavity will become smaller, the liquid raw materials will flow easily, and the product will be 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.
以上所揭露的仅为本发明的较佳实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明申请专利范围所作的等同变化，仍属本发明所涵盖的范围。The above disclosures are only preferred embodiments of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the patent scope of the present invention still fall within the scope of the present invention.
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