CN114536666A - Box cover forming die and forming method - Google Patents

Box cover forming die and forming method Download PDF

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Publication number
CN114536666A
CN114536666A CN202210160676.1A CN202210160676A CN114536666A CN 114536666 A CN114536666 A CN 114536666A CN 202210160676 A CN202210160676 A CN 202210160676A CN 114536666 A CN114536666 A CN 114536666A
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Prior art keywords
die
positioning
female die
box cover
cavity
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CN202210160676.1A
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Chinese (zh)
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陆孝庭
陆致虞
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Ruili Biotechnology Hangzhou Co ltd
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Ruili Biotechnology Hangzhou Co ltd
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Priority to CN202210160676.1A priority Critical patent/CN114536666A/en
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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
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14065—Positioning or centering articles in the mould
    • 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
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14065—Positioning or centering articles in the mould
    • B29C2045/14155—Positioning or centering articles in the mould using vacuum or suction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/56—Stoppers or lids for bottles, jars, or the like, e.g. closures
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

A box cover forming die is used for producing a paper lunch box cover, the paper lunch box cover comprises a paperboard and a frame, and the frame is formed on the outer edge of the paperboard in an injection molding mode; the method is characterized in that: the die comprises a male die and a female die, wherein the male die and the female die can be matched with each other or separated from each other; the inner side surface of the female die is provided with a female die cavity, the center of the female die cavity is provided with a positioning platform, the positioning platform is provided with an air suction opening, and the air suction opening is connected with an air suction fan through an air duct arranged in the female die; the periphery of the positioning platform of the cavity is provided with a groove for forming a frame, and a plurality of positioning piles are uniformly distributed in the groove; the positioning pile protrudes inwards based on the concave die, and the top surface of the positioning pile is flush with the positioning platform; the paperboard is fixed on the positioning platform through a suction fan, and the outer edge of the paperboard is exposed out of the positioning platform and covers the positioning pile; the lateral surface of die is equipped with the mouth of moulding plastics, and the mouth of moulding plastics is through runner and the recess intercommunication that sets up in the die. The invention also provides a forming method of the box cover forming die. The box cover produced by the invention has stable quality and low rejection rate.

Description

一种盒盖成型模具及成型方法A kind of box cover forming mold and forming method

技术领域technical field

本发明涉及纸餐盒加工技术领域，尤其涉及一种盒盖成型模具及成型方法。The invention relates to the technical field of paper lunch box processing, in particular to a box lid forming mold and a forming method.

背景技术Background technique

食品外卖市场是一次性塑料餐盒的主要应用市场，随着各地陆续颁布限塑令，限期限制或禁止使用一次性塑料产品，纸餐盒与生物全降解材料(例如PLA)已经在一次性餐具领域开始逐步取代传统塑料。The food delivery market is the main application market for disposable plastic lunch boxes. With the successive promulgation of plastic restrictions in various places, the use of disposable plastic products has been restricted or prohibited within a time limit. Paper lunch boxes and biodegradable materials (such as PLA) have been used in disposable tableware. The field began to gradually replace traditional plastics.

现有技术中，纸餐盒的盒盖包括纸质盒盖、塑料盒盖以及纸塑结合的盒盖等等，其中，塑料盒盖不符合环保要求，纸质盒盖、纸塑结合的盒盖与纸质盒体的水密封性较差难以推广。因此，申请人设计出一种盒盖，如图5a、b所示，在纸板7外沿连接生物降解材料注塑的边框8，边框8具有平行于纸板的顶面和垂直于纸板的侧壁，边框侧壁的内侧设有与纸质盒体扣合的卡筋。In the prior art, the box cover of the paper lunch box includes a paper box cover, a plastic box cover, and a box cover combined with paper and plastic, etc., wherein the plastic box cover does not meet the requirements of environmental protection, and the paper box cover, the box combined with paper and plastic, etc. The poor water tightness between the cover and the paper box body is difficult to promote. Therefore, the applicant has designed a box cover, as shown in Figures 5a and b, the outer edge of the cardboard 7 is connected to a frame 8 of biodegradable material injection molding, the frame 8 has a top surface parallel to the cardboard and a side wall perpendicular to the cardboard, The inner side of the side wall of the frame is provided with a clamping rib which is fastened with the paper box body.

参照图6a，上述盒盖采用注塑模具成型的方式进行制作，利用注塑机在纸板外沿成型边框时，由于纸板7的外边缘悬空7-1在现有凸模11和现有凹模10形成的注塑型腔10-3中，当生物全降解材料注入注塑型腔10-3时，纸板外边缘悬空7-1的部位受到生物全降解材料的冲击，导致纸板7与边框8的连接处质量不稳定，出现纸板7露出边框8外或生物全降解材料溢出注塑型腔10-3(参照图6b中的C处和D处)的情况。因此，如何设计生产上述盒盖的注塑模具成为了急需解决的问题。Referring to Figure 6a, the above-mentioned box cover is produced by means of injection moulding. When the frame is formed on the outer edge of the cardboard by the injection molding machine, the outer edge of the cardboard 7 is suspended in the existing male mold 11 and the existing female mold 10. In the injection molding cavity 10-3, when the biodegradable material is injected into the injection molding cavity 10-3, the part where the outer edge of the cardboard is suspended 7-1 is impacted by the biodegradable material, resulting in the quality of the connection between the cardboard 7 and the frame 8. Instability, the cardboard 7 is exposed outside the frame 8 or the biodegradable material overflows the injection molding cavity 10-3 (refer to C and D in FIG. 6b). Therefore, how to design an injection mold for producing the above box cover has become an urgent problem to be solved.

发明内容SUMMARY OF THE INVENTION

为克服上述问题，本发明提供一种盒盖成型模具及成型方法。In order to overcome the above problems, the present invention provides a box cover forming mold and a forming method.

本发明的第一方面提供一种盒盖成型模具，用于生产纸餐盒盒盖，所述纸餐盒盒盖包括纸板和边框，边框注塑成型在纸板的外沿；包括凸模和凹模，凸模和凹模之间能相互合模或分模；以凸模和凹模相互靠近的一侧为内侧，反之为外侧；A first aspect of the present invention provides a box lid forming mold for producing a paper lunch box lid, the paper lunch box lid includes a cardboard and a frame, and the frame is injection-molded on the outer edge of the cardboard; including a punch and a concave die , the punch and the die can be closed or split with each other; the side where the punch and the die are close to each other is the inner side, and the opposite is the outer side;

所述凹模内侧面设有凹模腔，凹模腔的中心设有定位平台，定位平台上设有吸风口，吸风口通过凹模内设置的风道与吸风机相连；凹模腔在定位平台的外周设有供边框成型的凹槽，凹槽内设有多个均布的定位桩；定位桩基于凹模向内侧凸出，定位桩的顶面与定位平台齐平；所述纸板通过吸风机固定在定位平台上，纸板的外缘露出定位平台外并覆盖在定位桩上；所述凹模的外侧面设有注塑口，注塑口通过凹模内设置的流道与凹槽连通；The inner side of the concave mold is provided with a concave mold cavity, the center of the concave mold cavity is provided with a positioning platform, and an air suction port is arranged on the positioning platform. The outer periphery of the platform is provided with a groove for frame forming, and a plurality of evenly distributed positioning piles are arranged in the groove; It is fixed on the positioning platform by a suction fan, and the outer edge of the cardboard is exposed outside the positioning platform and covered on the positioning pile; the outer side of the female mold is provided with an injection port, and the injection port is communicated with the groove through the flow channel provided in the female mold. ;

所述凸模的内侧面设有向内凸出的凸模块，凸模与凹模合模时，凸模块与定位桩配合夹紧所述纸板，凸模块、纸板与凹模腔形成用于成型所述边框的型腔。The inner side of the punch is provided with a convex module protruding inward. When the punch and the female die are closed, the convex module cooperates with the positioning pile to clamp the cardboard, and the convex module, the cardboard and the female mold cavity are formed for forming. The cavity of the frame.

进一步，所述凹模上设有多个凹模腔，凸模上设有多个与凹模腔配合的凸模块；每个凹模腔设有至少一个流道口，多个流道口分别通过设置在凹模内的流道与注塑口连通。Further, the concave mold is provided with a plurality of concave mold cavities, and the convex mold is provided with a plurality of convex modules matched with the concave mold cavities; each concave mold cavity is provided with at least one runner opening, and the plurality of runner openings are respectively arranged through The runner in the die communicates with the injection port.

进一步，所述定位桩的形状为矩形、方形、圆形、椭圆形或三角形。Further, the shape of the positioning pile is a rectangle, a square, a circle, an ellipse or a triangle.

本发明的第二个方面提供一种盒盖成型模具的成型方法，包括以下步骤：A second aspect of the present invention provides a molding method for a box lid molding die, comprising the following steps:

(1)将纸板通过机械手移动至定位平台的预设位置上，启动吸风机将纸板吸紧固定在定位平台上；(1) Move the cardboard to the preset position of the positioning platform through the manipulator, and start the suction fan to suck and fix the cardboard on the positioning platform;

(2)将所述成型模具与注塑机连接，纸板边缘夹紧在凸模块和定位桩之间；(2) connecting the forming mold with the injection molding machine, and clamping the edge of the cardboard between the convex module and the positioning pile;

(3)通过注塑机向模具的注塑口中注入生物全降解材料，使生物全降解材料充满所述模具的型腔，形成连接于纸板边缘的边框；(3) injecting the biodegradable material into the injection port of the mold through the injection molding machine, so that the biodegradable material fills the cavity of the mold to form a frame connected to the edge of the cardboard;

(4)冷却成型后，将边框和纸板形成的盒盖取出。(4) After cooling and forming, take out the box cover formed by the frame and cardboard.

本发明的有益效果是：The beneficial effects of the present invention are:

(1)通过在凹模内设置定位桩，当凸模与凹模合模时，凸模块与定位桩配合夹紧所述纸板的外边缘，注塑时纸板与边框具有稳定的结合位置，为纸质结合生物降解材料的盒盖解决了使用现有注塑模具无法得到质量稳定的盒盖的问题。(1) By arranging positioning stakes in the female mold, when the male mold and the female mold are closed, the convex module and the positioning piles cooperate to clamp the outer edge of the cardboard. The box cover combined with the biodegradable material solves the problem that the box cover with stable quality cannot be obtained by using the existing injection mold.

(2)多个定位框在边框上形成了连续的孔型结构，节省生物全降解材料的同时兼具美观。(2) The multiple positioning frames form a continuous hole-shaped structure on the frame, which saves fully biodegradable materials and is aesthetically pleasing.

附图说明Description of drawings

图1是本发明中凸模的结构示意图，Fig. 1 is the structural representation of punch in the present invention,

图2是的结构示意图(左半边由凸模中间剖开，右半边由凸模导柱处剖开)。Figure 2 is a schematic diagram of the structure (the left half is cut from the middle of the punch, and the right half is cut at the guide post of the punch).

图3是本发明中凹模的结构示意图。FIG. 3 is a schematic view of the structure of the die in the present invention.

图4是本发明中沿凹模A向和B向的结构示意图。FIG. 4 is a schematic view of the structure along the A and B directions of the die in the present invention.

图5a是本发明生产的盒盖的示意图。Figure 5a is a schematic view of a lid produced by the present invention.

图5b是本发明生产的盒盖的剖面图。Figure 5b is a cross-sectional view of a lid produced by the present invention.

图6a是采用现有模具生产盒盖的示意图。FIG. 6a is a schematic diagram of using the existing mold to produce the box cover.

图6b是采用现有图6a所示模具生产出的盒盖的示意图。FIG. 6b is a schematic diagram of a box cover produced by using the existing mold shown in FIG. 6a.

附图标记说明：1、注塑口；2、吸风口、3、定位桩；4、流道口；5、风道；6、流道；7、纸板；7-1、纸板边缘悬空；8、边框；9、定位桩在边框上留下的孔型结构；10、现有凹模；10-1、现有凹模上的流道；10-2、现有凸模上的风道；10-3、现有模具上的型腔；11、现有凸模；12、凹模；13、凸模；14、型腔。Description of reference numerals: 1. Injection port; 2. Air suction port, 3. Positioning pile; 4. Flow channel opening; 5. Air channel; 6. Flow channel; 7. Cardboard; ; 9. The hole structure left by the positioning pile on the frame; 10. The existing die; 10-1. The flow channel on the existing die; 10-2. The air channel on the existing punch; 10- 3. The cavity on the existing mold; 11. The existing punch; 12, the concave die; 13, the punch; 14, the cavity.

具体实施方式Detailed ways

下面将结合附图对本发明专利的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions of the patent of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

在本发明的描述中，需要说明的是，如出现术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，如出现术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。In the description of the present invention, it should be noted that when the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear. The orientation or positional relationship indicated by "" etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, a specific orientation, and a specific orientation. The orientation configuration and operation of the device should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third," as they appear, are for descriptive purposes only and should not be construed to indicate or imply relative importance.

在本发明的描述中，需要说明的是，除非另有明确的规定和限定，如出现术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a Removable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

参照附图，本发明的第一个实施例提供一种盒盖成型模具，用于生产纸餐盒盒盖，所述纸餐盒盒盖包括纸板和边框，边框注塑成型在纸板的外沿；包括凸模和凹模，凸模和凹模之间能相互合模或分模；以凸模和凹模相互靠近的一侧为内侧，反之为外侧；Referring to the accompanying drawings, the first embodiment of the present invention provides a box cover forming mold for producing a paper lunch box cover, the paper lunch box cover includes a cardboard and a frame, and the frame is injection-molded on the outer edge of the cardboard; Including the punch and the die, the punch and the die can be closed or split with each other; the side where the punch and the die are close to each other is the inner side, and the opposite is the outer side;

所述凹模内侧面设有凹模腔，凹模腔的中心设有定位平台，定位平台上设有吸风口，吸风口通过凹模内设置的风道5与吸风机相连；凹模腔在定位平台的外周设有供边框成型的凹槽，凹槽内设有多个均布的定位桩；定位桩基于凹模向内侧凸出，定位桩3的顶面与定位平台齐平；所述纸板通过吸风机固定在定位平台上，纸板的外缘露出定位平台外并覆盖在定位桩3上；所述凹模的外侧面设有注塑口1，注塑口1通过凹模内设置的流道5与凹槽连通；The inner side of the concave mold is provided with a concave mold cavity, the center of the concave mold cavity is provided with a positioning platform, and the positioning platform is provided with an air suction port, and the air suction port is connected with the suction fan through the air duct 5 set in the concave mold; The outer periphery of the positioning platform is provided with a groove for frame forming, and a plurality of evenly distributed positioning piles are arranged in the groove; the positioning piles protrude inwardly based on the female die, and the top surface of the positioning pile 3 is flush with the positioning platform; The cardboard is fixed on the positioning platform by the suction fan, and the outer edge of the cardboard is exposed outside the positioning platform and covered on the positioning pile 3; Road 5 communicates with the groove;

所述凸模的内侧面设有向内凸出的凸模块，凸模与凹模合模时，凸模块与定位桩3配合夹紧所述纸板，凸模块、纸板与凹模腔形成用于成型所述边框的型腔。The inner side of the punch is provided with a convex module that protrudes inward. When the punch and the female die are closed, the convex module cooperates with the positioning pile 3 to clamp the cardboard, and the convex module, the cardboard and the female cavity form a A cavity of the frame is formed.

本发明的实施例中，所述定位桩的形状为矩形、方形、圆形、、椭圆形、三角形或任意形状，多个定位桩3必须间隔设置，否则将阻挡生物全降解材料完全流入型腔。In the embodiment of the present invention, the shape of the positioning pile is rectangle, square, circle, ellipse, triangle or any shape, and a plurality of positioning piles 3 must be arranged at intervals, otherwise it will prevent the biodegradable material from completely flowing into the cavity .

本发明的一些实施例中，所述凹模上设有一对凹模腔，凸模上设有一对与凹模腔配合的凸模块；每个凹模腔的两侧分别设有一个流道口4，四个流道口4分别通过设置在凹模内的热流道5与注塑口1连通。具体的，凹模上设置的凹模腔数量与产品的大小有关，产品大的可能只有一个凹模腔，产品小的可能有多个凹模腔。凹模腔的数量大多是呈对数的，对出比较容易开模，单数也可以。In some embodiments of the present invention, the female mold is provided with a pair of female mold cavities, and the male mold is provided with a pair of male modules matched with the female mold cavities; two sides of each female mold cavity are respectively provided with a runner opening 4 , the four runner ports 4 are respectively communicated with the injection port 1 through the hot runner 5 arranged in the female mold. Specifically, the number of concave mold cavities set on the concave mold is related to the size of the product, a large product may have only one concave mold cavity, and a small product may have multiple concave mold cavities. Most of the number of cavity cavities are logarithmic, and it is easier to open the mold when they are opposite, even if they are singular.

本发明的第二个实施例提供一种盒盖成型模具的成型方法，包括以下步骤：A second embodiment of the present invention provides a molding method for a box lid molding die, comprising the following steps:

(1)将纸板通过机械手移动至定位平台的预设位置上，启动吸风机将纸板吸紧固定在定位平台上；(1) Move the cardboard to the preset position of the positioning platform through the manipulator, and start the suction fan to suck and fix the cardboard on the positioning platform;

(2)将所述成型模具与注塑机连接，纸板边缘夹紧在凸模块和定位桩之间；(2) connecting the forming mold with the injection molding machine, and clamping the edge of the cardboard between the convex module and the positioning pile;

(3)通过注塑机向模具的注塑口中注入生物全降解材料，使生物全降解材料充满所述模具的型腔，形成连接于纸板边缘的边框；(3) injecting the biodegradable material into the injection port of the mold through the injection molding machine, so that the biodegradable material fills the cavity of the mold to form a frame connected to the edge of the cardboard;

(4)冷却成型后，将边框和纸板形成的盒盖取出。(4) After cooling and forming, take out the box cover formed by the frame and cardboard.

本说明书实施例所述的内容仅仅是对发明构思的实现形式的列举，本发明的保护范围不应当被视为仅限于实施例所陈述的具体形式，本发明的保护范围也及于本领域技术人员根据本发明构思所能够想到的等同技术手段。The content described in the embodiments of the present specification is only an enumeration of the realization forms of the inventive concept, and the protection scope of the present invention should not be regarded as limited to the specific forms stated in the embodiments, and the protection scope of the present invention also extends to those skilled in the art. Equivalent technical means that can be conceived by a person based on the inventive concept.

Claims (4)

1. A box cover forming die is used for producing a paper lunch box cover, the paper lunch box cover comprises a paperboard and a frame, and the frame is formed on the outer edge of the paperboard in an injection molding mode; the method is characterized in that: the die comprises a male die and a female die, wherein the male die and the female die can be matched with each other or separated from each other; the side of the male die and the female die which are close to each other is taken as the inner side, and the other side is taken as the outer side;
the inner side surface of the female die is provided with a female die cavity, the center of the female die cavity is provided with a positioning platform, the positioning platform is provided with an air suction opening, and the air suction opening is connected with a suction fan through an air duct arranged in the female die; the periphery of the positioning platform of the cavity is provided with a groove for forming a frame, and a plurality of positioning piles are uniformly distributed in the groove; the positioning pile protrudes inwards based on the concave die, and the top surface of the positioning pile is flush with the positioning platform; the paperboard is fixed on the positioning platform through a suction fan, and the outer edge of the paperboard is exposed out of the positioning platform and covers the positioning pile; an injection molding port is arranged on the outer side surface of the female die and is communicated with the groove through a flow channel arranged in the female die;
the inner side surface of the male die is provided with a male die block protruding inwards, when the male die and the female die are closed, the male die block is matched with the positioning pile to clamp the paper board, and the male die block, the paper board and the female die cavity form a cavity for forming the frame.
2. The lid forming mold according to claim 1, wherein: the female die is provided with a plurality of female die cavities, and the male die is provided with a plurality of male die blocks matched with the female die cavities; each cavity is provided with at least one runner port, and the runner ports are respectively communicated with the injection molding port through runners arranged in the cavity.
3. The lid forming mold according to claim 1, wherein: the positioning pile is rectangular, square, circular, oval or triangular.
4. The forming method of the box cover forming mold according to any one of claims 1 to 3, comprising the steps of:
(1) moving the paper board to a preset position of the positioning platform through a manipulator, and starting a suction fan to tightly suck and fix the paper board on the positioning platform;
(2) connecting the forming die with an injection molding machine, and clamping the edge of the paperboard between the convex die block and the positioning pile;
(3) injecting a fully biodegradable material into an injection port of the mold through an injection molding machine, so that the cavity of the mold is filled with the fully biodegradable material to form a frame connected to the edge of the paperboard;
(4) and after cooling and forming, taking out the box cover formed by the frame and the paperboard.
CN202210160676.1A 2022-02-22 2022-02-22 Box cover forming die and forming method Pending CN114536666A (en)

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JPH08267505A (en) * 1995-03-31 1996-10-15 Nissha Printing Co Ltd Manufacture of insert-molded article and insert film
EP0940244A2 (en) * 1998-03-02 1999-09-08 Yamamoto Kogaku Kabushiki Kaisha Method and apparatus for manufacturing lenses and a lens manufactured thereby
CN201525111U (en) * 2009-10-27 2010-07-14 宁波跃飞模具有限公司 Compound type positioning and ejection mechanism of glass-plastic folding injection moulding die
CN101918190A (en) * 2008-08-12 2010-12-15 斯塔诺阿埃索澳吉有限公司 Mould system for making a partition in a cardboard-based container
CN101918191A (en) * 2008-08-12 2010-12-15 斯塔诺阿埃索澳吉有限公司 Mould system for manufacturing a container
JP2013067131A (en) * 2011-09-26 2013-04-18 Nec Corp Simultaneous injection-molded and decorated die, simultaneous injection-molding and decorating device, and simultaneous injection-molding and decorating method
CN212147408U (en) * 2020-01-17 2020-12-15 苏州泰之科模具有限公司 Injection mold of V type thin wall injection molding
CN217073163U (en) * 2022-02-22 2022-07-29 锐励生物科技(杭州)有限公司 Box cover forming die

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08267505A (en) * 1995-03-31 1996-10-15 Nissha Printing Co Ltd Manufacture of insert-molded article and insert film
EP0940244A2 (en) * 1998-03-02 1999-09-08 Yamamoto Kogaku Kabushiki Kaisha Method and apparatus for manufacturing lenses and a lens manufactured thereby
CN101918190A (en) * 2008-08-12 2010-12-15 斯塔诺阿埃索澳吉有限公司 Mould system for making a partition in a cardboard-based container
CN101918191A (en) * 2008-08-12 2010-12-15 斯塔诺阿埃索澳吉有限公司 Mould system for manufacturing a container
CN201525111U (en) * 2009-10-27 2010-07-14 宁波跃飞模具有限公司 Compound type positioning and ejection mechanism of glass-plastic folding injection moulding die
JP2013067131A (en) * 2011-09-26 2013-04-18 Nec Corp Simultaneous injection-molded and decorated die, simultaneous injection-molding and decorating device, and simultaneous injection-molding and decorating method
CN212147408U (en) * 2020-01-17 2020-12-15 苏州泰之科模具有限公司 Injection mold of V type thin wall injection molding
CN217073163U (en) * 2022-02-22 2022-07-29 锐励生物科技(杭州)有限公司 Box cover forming die

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Application publication date: 20220527