CN110126200A - A kind of movable type cavity mould of included hydraulic device - Google Patents
A kind of movable type cavity mould of included hydraulic device Download PDFInfo
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- CN110126200A CN110126200A CN201910466592.9A CN201910466592A CN110126200A CN 110126200 A CN110126200 A CN 110126200A CN 201910466592 A CN201910466592 A CN 201910466592A CN 110126200 A CN110126200 A CN 110126200A
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- 239000002994 raw material Substances 0.000 abstract description 20
- 238000001746 injection moulding Methods 0.000 abstract description 17
- 239000002131 composite material Substances 0.000 abstract description 13
- 239000007788 liquid Substances 0.000 abstract description 12
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- 238000007906 compression Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
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- 238000002347 injection Methods 0.000 description 12
- 239000007924 injection Substances 0.000 description 12
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 12
- 238000000465 moulding Methods 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 7
- 238000000034 method Methods 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 5
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- 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
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011344 liquid material 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
- 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
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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
- B29C45/2602—Mould construction elements
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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
- 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
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
本发明提供一种自带液压装置的活动型腔模具，其包括移动模和固定模，其特征在于，还包括液压装置、导向装置和连接件，由所述液压装置、所述导向装置、所述移动模芯和所述连接件组成第二次移动机构，本发明的自带液压装置的活动型腔模具由于设有液压装置，解决了目前固定型腔的注塑机的型腔大小不能调节的问题，提高了注塑机的生产性能。由于设有活动型腔，可以根据产品的尺寸和规格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。
The invention provides a movable cavity mold with a hydraulic device, which includes a movable mold and a fixed mold, and is characterized in that it also includes a hydraulic device, a guide device and a connecting piece, and the hydraulic device, the guide device, and the The moving mold core and the connecting piece form the second moving mechanism. The movable cavity mold with hydraulic device of the present invention is equipped with a hydraulic device, which solves the problem that the size of the cavity of the current fixed cavity injection molding machine cannot be adjusted. problem, improve the production performance of the injection molding machine. Due to the movable cavity, the size of the movable cavity can be adjusted according to the size and specifications of the product, so that the volume of the movable cavity before the compression is stopped is larger than the volume of the product, and the resistance to the flow of liquid raw materials in a large-volume movable cavity It will become smaller, the liquid raw material is easy to flow, 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，尤其涉及一种自带液压装置的活动型腔模具。The invention relates to a mold, in particular to a movable cavity mold with a hydraulic device.
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自带液压装置的活动型腔模具，由于设有液压装置，解决了目前固定型腔的注塑机的型腔大小不能调节的问题，提高了注塑机的生产性能。由于设有活动型腔，可以根据产品的尺寸和规格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。Based on the deficiencies of the prior art, the purpose of the present invention is to provide a movable cavity mold with its own hydraulic device. Due to the hydraulic device, the problem that the cavity size of the current fixed cavity injection molding machine cannot be adjusted is solved. Improve the production performance of the injection molding machine. Due to the movable cavity, the size of the movable cavity can be adjusted according to the size and specifications of the product, so that the volume of the movable cavity before compression stops is greater than the volume of the product, and the resistance of the flow of liquid raw materials in a large-volume movable cavity It will become smaller, the liquid raw material is easy to flow, 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.
为了实现上述目的，本发明提供了一种自带液压装置的活动型腔模具，其包括移动模和固定模，所述移动模和所述固定模相互配合，其特征在于，还包括液压装置、导向装置和连接件，所述移动模设有移动模芯，所述移动模芯通过所述连接件、所述液压装置与所述移动模活动连接，由所述液压装置、所述导向装置、所述移动模芯和所述连接件组成第二次移动机构。In order to achieve the above object, the present invention provides a movable cavity mold with a hydraulic device, which includes a movable mold and a fixed mold, the movable mold and the fixed mold cooperate with each other, and it is characterized in that it also includes a hydraulic device, guide device and connector, the movable mold is provided with a movable mold core, and the movable mold core is movably connected with the movable mold through the connector and the hydraulic device, and the hydraulic device, the guide device, The moving mold core and the connecting piece form a second moving mechanism.
作为本发明自带液压装置的活动型腔模具的改进，本发明自带液压装置的活动型腔模具还包括镶件组合，所述镶件组合固定在所述移动模上，所述镶件组合、所述移动模模芯与所述固定模模芯组成活动型腔。As an improvement of the movable cavity mold with hydraulic device of the present invention, the movable cavity mold with hydraulic device of the present invention also includes an insert combination, which is fixed on the movable mold, and the insert combination . The movable mold core and the fixed mold core form a movable mold cavity.
作为本发明自带液压装置的活动型腔模具的改进，本发明自带液压装置的活动型腔模具所述连接件设有在弹簧、电动或气动装置。As an improvement of the movable cavity mold with hydraulic device in the present invention, the connecting parts of the movable cavity mold with hydraulic device in the present invention are provided with spring, electric or pneumatic devices.
作为本发明自带液压装置的活动型腔模具的改进，本发明自带液压装置的活动型腔模具所述活动型腔设有排气结构和温控系统。As an improvement of the movable cavity mold with hydraulic device in the present invention, the movable cavity of the movable cavity mold with hydraulic device in the present invention is provided with an exhaust structure and a temperature control system.
作为本发明自带液压装置的活动型腔模具的改进，本发明自带液压装置的活动型腔模具所述活动型腔是一个或者一个以上。As an improvement of the movable cavity mold with hydraulic device in the present invention, the movable cavity mold with hydraulic device in the present invention has one or more movable cavities.
作为本发明自带液压装置的活动型腔模具的改进，本发明自带液压装置的活动型腔模具所述温控系统设有随形恒温水道。As an improvement of the movable cavity mold with hydraulic device in the present invention, the temperature control system of the movable cavity mold with hydraulic device in the present invention is provided with a conformal constant temperature water channel.
与现有技术相比较，本发明自带液压装置的活动型腔模具具有以下有益效果：由于设有液压装置，解决了目前固定型腔的注塑机的型腔大小不能调节的问题，提高了注塑机的生产性能。由于设有活动型腔，可以根据产品的尺寸和规格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 movable cavity mold with hydraulic device of the present invention has the following beneficial effects: due to the hydraulic device, the problem that the size of the cavity of the current fixed cavity injection molding machine cannot be adjusted is solved, and the injection molding process is improved. machine performance. Due to the movable cavity, the size of the movable cavity can be adjusted according to the size and specifications of the product, so that the volume of the movable cavity before compression stops is greater than the volume of the product, and the resistance of the flow of liquid raw materials in a large-volume movable cavity It will become smaller, the liquid raw material is easy to flow, 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.
附图说明Description of drawings
图1为本发明自带液压装置的活动型腔模具优选实施例中移动模的结构示意图。Fig. 1 is a structural schematic diagram of a movable mold in a preferred embodiment of a movable cavity mold with a hydraulic device in accordance with the present invention.
图2为本发明自带液压装置的活动型腔模具优选实施例中固定模的结构示意图。Fig. 2 is a schematic structural view of a fixed mold in a preferred embodiment of a movable cavity mold with a hydraulic device in accordance with the present invention.
图3为本发明自带液压装置的活动型腔模具优选实施例中步骤一的结构示意图。Fig. 3 is a structural schematic diagram of Step 1 in the preferred embodiment of the movable cavity mold with its own hydraulic device in the present invention.
图4为本发明自带液压装置的活动型腔模具优选实施例中步骤二的结构示意图。Fig. 4 is a structural schematic diagram of Step 2 in the preferred embodiment of the movable cavity mold with its own hydraulic device in the present invention.
图5为本发明自带液压装置的活动型腔模具优选实施例中步骤三的结构示意图。Fig. 5 is a structural schematic diagram of Step 3 in the preferred embodiment of the movable cavity mold with its own hydraulic device in the present invention.
图6为本发明自带液压装置的活动型腔模具优选实施例中步骤四的结构示意图。Fig. 6 is a structural schematic diagram of Step 4 in the preferred embodiment of the movable cavity mold with its own hydraulic device in the present invention.
图7为本发明自带液压装置的活动型腔模具优选实施例中步骤五的结构示意图。Fig. 7 is a structural schematic diagram of Step 5 in the preferred embodiment of the movable cavity mold with its own hydraulic device in the present invention.
图8为本发明自带液压装置的活动型腔模具优选实施例中步骤六的结构示意图。Fig. 8 is a schematic structural diagram of Step 6 in the preferred embodiment of the movable cavity mold with its own hydraulic device in the present invention.
图9为本发明自带液压装置的活动型腔模具优选实施例中步骤七的结构示意图。Fig. 9 is a structural schematic diagram of Step 7 in the preferred embodiment of the movable cavity mold with hydraulic device in the present invention.
图10为本发明自带液压装置的活动型腔模具优选实施例中所述移动模的A-A剖面图。Fig. 10 is an A-A sectional view of the movable mold in the preferred embodiment of the movable cavity mold with its own hydraulic device in the present invention.
图11为本发明自带液压装置的活动型腔模具优选实施例中所述移动模的A-A剖面图中M放大示意图。Fig. 11 is an enlarged schematic diagram of M in the A-A sectional view of the moving mold in the preferred embodiment of the movable cavity mold with its own hydraulic device in the present invention.
图12为本发明自带液压装置的活动型腔模具优选实施例中所述固定模的C-C剖面图。Fig. 12 is a C-C sectional view of the fixed mold in the preferred embodiment of the movable cavity mold with its own hydraulic device in the present invention.
图13为本发明自带液压装置的活动型腔模具优选实施例中的模具的结构示意图。Fig. 13 is a structural schematic diagram of the mold in the preferred embodiment of the movable cavity mold with its own hydraulic device in the present invention.
图14为本发明自带液压装置的活动型腔模具优选实施例中的模具的结构示意图中K放大示意图。Fig. 14 is an enlarged schematic diagram of K in the structural schematic diagram of the mold in the preferred embodiment of the movable cavity mold with its own hydraulic device in the present invention.
具体实施方式Detailed ways
本发明自带液压装置的活动型腔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 active cavity mold with hydraulic device of the present invention is suitable for producing thin-walled products, battery back covers, mobile phone cases or optical products, and the materials used are high-viscosity materials or low-viscosity materials, composite materials that are not Composite materials separated from each other.
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，详细描述本发明自带液压装置的活动型腔模具的优选实施例及其他实施例。With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12, Fig. 13 and Fig. 14, the present invention is described in detail. Preferred and other embodiments of the movable cavity mold of the device.
本发明提供一种自带液压装置的活动型腔模具，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相互配合，其特征在于，还包括液压装置1.1.1、导向装置1.1.4和连接件1.1.3，所述移动模1设有移动模芯1.4，所述移动模芯1.4通过所述连接件1.1.3、所述液压装置1.1.1与所述移动模1活动连接，由所述液压装置1.1.1、所述导向装置1.1.4、所述移动模芯1.4和所述连接件1.1.3组成第二次移动机构1.1。The present invention provides a movable cavity mold with a hydraulic device, which includes a movable mold 1 and a fixed mold 2, the movable mold 1 and the fixed mold 2 cooperate with each other, and it is characterized in that it also includes a hydraulic device 1.1.1 , guiding device 1.1.4 and connector 1.1.3, the movable mold 1 is provided with a movable core 1.4, and the movable core 1.4 passes through the connector 1.1.3, the hydraulic device 1.1.1 and the The moving mold 1 is movably connected, and the second moving mechanism 1.1 is composed of the hydraulic device 1.1.1, the guiding device 1.1.4, the moving core 1.4 and the connecting piece 1.1.3.
在本实施例中，本发明自带液压装置的活动型腔模具还包括镶件组合3，所述镶件组合1.2固定在所述移动模1上，所述镶件组合1.2、所述移动模模芯1.4与所述固定模模芯2.1组成活动型腔。In this embodiment, the movable cavity mold with its own hydraulic device of the present invention also includes an insert assembly 3, the insert assembly 1.2 is fixed on the moving mold 1, the insert assembly 1.2, the moving mold The mold core 1.4 and the fixed mold core 2.1 form a movable cavity.
在本实施例中，本发明自带液压装置的活动型腔模具的所述连接件1.1.3设有弹簧、电动或气动装置1.1.3.1，为了方便所述移动模模芯1.4回退取出产品。In this embodiment, the connector 1.1.3 of the movable cavity mold with hydraulic device in the present invention is provided with a spring, electric or pneumatic device 1.1.3.1, in order to facilitate the retraction of the movable mold core 1.4 to take out the product .
本实施例中，本发明自带液压装置的活动型腔模具的所述活动型腔设有排气结构8和温控系统5。In this embodiment, the movable cavity of the movable cavity mold with hydraulic device in the present invention is provided with an exhaust structure 8 and a temperature control system 5 .
在本实施例中，本发明自带液压装置的活动型腔模具的所述活动型腔是两个。In this embodiment, there are two movable cavities of the movable cavity mold with hydraulic device in the present invention.
在其他实施例中，本发明自带液压装置的活动型腔模具的所述活动型腔是一个。In other embodiments, the movable cavity mold with hydraulic device in the present invention has one movable cavity.
在其他实施例中，本发明自带液压装置的活动型腔模具的所述活动型腔是两个以上。In other embodiments, the movable cavity mold with hydraulic device in the present invention has more than two movable cavities.
在本实施例中，本发明自带液压装置的活动型腔模具的所述温控系统5设有随形恒温水道5.1。In this embodiment, the temperature control system 5 of the active cavity mold with its own hydraulic device in the present invention is provided with a conformal constant temperature water channel 5.1.
本发明自带液压装置的活动型腔模具生产薄壁产品导光板的工作过程如下：The working process of the movable cavity mold with hydraulic device in the present invention to produce thin-walled product light guide plate is as follows:
导光板的厚度为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 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 molding of the existing light guide plate adopts the direct injection molding of the ordinary mold, the size of the mold cavity cannot be changed, and after the material is directly injected into the fixed cavity, the plunger or reciprocating screw is injected into the cavity of the closed mold to form a product. plastic processing methods.
普通模具直接注塑超薄产品导光板，虽然注入的液态原料流动性好，但是由于超薄产品导光板的成型型腔容积下，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 the ultra-thin product light guide plate. Although the injected liquid raw material has good fluidity, due to the low volume of the molding cavity of the ultra-thin product light guide plate, the material needs to be injected at a higher pressure. The pressure is 2800kgf/cm 2 , The high pressure leads to large internal stress of the molded light guide plate, poor appearance, and uneven thickness at the near end and far end of the feeding port.
在本实施例中，本发明自带液压装置的活动型腔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/cm2，低压导致成型的导光板的内应力小，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 movable cavity mold with hydraulic device 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 used at a higher The liquid material with good fluidity is injected at a lower speed and pressure. The higher feeding speed is 1000mm/s, and the lower injection pressure is 1800kgf/cm 2 . The thickness of the near end and the far end of the feed port is uniform.
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.
第二步所述移动模1和所述固定模2相互配合，移动模1向固定模2方向移动，开始合模。In the second step, the movable mold 1 and the fixed mold 2 cooperate with each other, and the movable mold 1 moves toward the fixed mold 2 to start mold closing.
第三步由移动模模芯1.4、固定模模芯2.1和镶件组合1.2组成活动型腔A，此时活动型腔容积最大。In the third step, the movable mold core 1.4, the fixed mold core 2.1 and the insert combination 1.2 form the movable mold cavity A, and the volume of the movable mold cavity is the largest at this time.
第四步往活动型腔C注入成型原料，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/cm2。The fourth step is to inject molding raw materials into the active cavity C, and inject liquid raw materials with good fluidity at a higher speed and lower pressure. The highest feeding speed is 1000mm/s, and the lowest injection pressure is 1800kgf/cm 2 .
第五步启动液压装置1.1.1，边注料边压缩，推动移动模模芯压缩原料直至达到产品的体积,此时活动型腔容积E，停止压缩。The fifth step is to start the hydraulic device 1.1.1, compress while injecting material, and push the moving mold core to compress the raw material until it reaches the volume of the product. At this time, the volume of the active cavity is E, and the compression is stopped.
第六步产品冷却成型，移动模1后退，第二次移动机构1.1后退，打开模具，取出产品。In the sixth step, the product is cooled and formed, the moving mold 1 is retreated, and the moving mechanism 1.1 is retreated for the second time, the mold is opened, and the product is taken out.
第七步移动模模芯1.4在弹簧的作用下后退，液压装置1.1.1恢复原位。The seventh step is to move the mold core 1.4 back under the action of the spring, and the hydraulic device 1.1.1 returns to its original position.
所述活动型腔A≥所述活动型腔C≥所述活动型腔E。The active cavity A≥the active cavity C≥the active cavity E.
本发明自带液压装置的活动型腔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 movable cavity mold with hydraulic device of the present invention uses easily separated composite material to produce the working process of the mobile phone back cover 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 performance of high hardness and high strength at the same time. High hardness solves the effect of wear resistance and less scratches on the back cover of the mobile phone, and high strength solves the use effect of the back cover of the mobile phone against 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, 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. Used as a raw material for the back cover of a mobile phone, it can meet the requirements of wear resistance and less scratches on the back cover of the mobile phone.
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 the back cover of a mobile phone to meet the requirements of the drop and crack resistance of the back cover of the mobile phone. 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 high strength of the mobile phone back cover at the same time, the 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, making molding difficult and low yield.
本发明自带液压装置的活动型腔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 active cavity mold with hydraulic device in the present invention can be molded under the conditions of low speed and low pressure compared with the traditional molding process due to the use of the active cavity. Because the injection speed is relatively slow and the pressure is relatively small, PMMA and PC are not easy Separated from each other, the difficulty of molding becomes smaller, and the yield rate is greatly improved.
本发明自带液压装置的活动型腔模具使用使用PMMA+PC复合材料生产手机后盖过程如下：The movable cavity mold with hydraulic device of the present invention uses PMMA+PC composite material to produce the mobile phone back cover process as follows:
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。First, the composite material of PMMA+PC is dried and sent to the injection molding machine to convert the composite material of PMMA+PC from solid to liquid.
第二步所述移动模1和所述固定模2相互配合，移动模1向固定模2方向移动，开始合模。In the second step, the movable mold 1 and the fixed mold 2 cooperate with each other, and the movable mold 1 moves toward the fixed mold 2 to start mold closing.
第三步由移动模模芯1.4、固定模模芯2.1和镶件组合1.2组成活动型腔A，此时活动型腔容积最大。In the third step, the movable mold core 1.4, the fixed mold core 2.1 and the insert combination 1.2 form the movable mold cavity A, and the volume of the movable mold cavity is the largest at this time.
第四步往活动型腔C注入成型原料，进料速度为300mm/s，进料压力为1800kgf/cm2。The fourth step is to inject molding raw materials into the movable cavity C, the feeding speed is 300mm/s, and the feeding pressure is 1800kgf/cm 2 .
第五步启动液压装置1.1.1，边注料边压缩，推动移动模模芯压缩原料直至达到产品的体积，此时活动型腔为E,停止压缩。The fifth step is to start the hydraulic device 1.1.1, compress while injecting material, and push the moving mold core to compress the raw material until it reaches the volume of the product. At this time, the active cavity is E, and the compression is stopped.
第六步产品冷却成型，移动模1后退，第二次移动机构1.1后退，打开模具，取出产品。In the sixth step, the product is cooled and formed, the moving mold 1 is retreated, and the moving mechanism 1.1 is retreated for the second time, the mold is opened, and the product is taken out.
第七步移动模模芯1.4在弹簧装置1.1.3.1的作用下后退，液压装置1.1.1恢复原位。The seventh step is to move the mold core 1.4 back under the action of the spring device 1.1.3.1, and the hydraulic device 1.1.1 returns to its original position.
所述活动型腔A≥所述活动型腔C≥所述活动型腔E。The active cavity A≥the active cavity C≥the active cavity E.
与现有技术相比较，本发明具有以下有益效果：由于设有液压装置，解决了目前不具有压缩功能的注塑机不能压缩的问题，提高了注塑机的生产性能。由于设有活动型腔，可以根据产品的尺寸和规格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: due to the hydraulic device, the problem that the current injection molding machine without compression function cannot be compressed is solved, and the production performance of the injection molding machine is improved. Due to the movable cavity, the size of the movable cavity can be adjusted according to the size and specifications of the product, so that the volume of the movable cavity before compression stops is greater than the volume of the product, and the resistance of the flow of liquid raw materials in a large-volume movable cavity It will become smaller, the liquid raw material is easy to flow, 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.
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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