Gas-assisted forming structure

Abstract

The utility model relates to the field of mold structures, in particular to a gas-assisted molding structure, which comprises a mold core, a pouring pipe and a pouring structure for molding a product, the middle of the pouring pipe is communicated with a connector, the upper part of the connector is provided with a connecting hole, and the connecting hole is connected with a blowing component through a gas pipe. According to the gas-assisted forming structure, the blowing assembly is communicated with the pouring pipe, so that pouring liquid in the center of a product can be blown out in the product forming stage after glue injection is completed, a hollow structure is formed in the middle of the product, and forming of the product with the hollow middle can be completed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a forming die field especially relates to a gas auxiliary forming structure. BACKGROUND

[0002] The mold is a kind of common forming structure, is used to form the product of various shapes, especially various plastic parts, and most will be made by injection molding mold.

[0003] However, some products, product glue position is too thick, appearance surface will shrink seriously, mold structure cannot be realized, such as the middle part of product is hollow structure, such product, cannot carry out line position demolding, the conventional mold structure cannot form such product, needs to be formed and subsequent processing by complex mold structure;Therefore, it is urgent to design a structure that can complete the forming of such product in simple mold structure. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of gas auxiliary forming structures, blowout on pouring pipe is communicated with blowing assembly, so it can blow out the pouring liquid in the center of product in the product forming stage after completing injection, so that the middle part of product forms hollow structure, so it can complete the forming of middle part hollow product.

[0005] In order to achieve the above object, the technical scheme adopted by the utility model is as follows: a kind of gas auxiliary forming structure, including the mold core for forming product, pouring pipe and pouring structure, the middle part of pouring pipe is communicated with connector, connector upper portion is provided with connecting hole, connecting hole is connected with blowing assembly by air pipe.

[0006] Preferably, the mold core is also provided with a flash well communicated with the product forming cavity, and the flash well is used to contain the pouring material blown out of the product.

[0007] Preferably, the pouring pipe is communicated with a connector, the connector includes a connector body, the connector body is provided with a connecting pipe matched with the connector, the connecting pipe is communicated with the connecting hole, and a one-way valve is arranged in the connecting pipe.

[0008] Preferably, the lower end of the connecting pipe is matched with a sealing sleeve, and the lower end of the connector body is provided with an arc-shaped opening matched with the shape of the pouring pipe.

[0009] Preferably, the mold core is provided with a detachable positioning block, and the positioning block is used to press and clamp the pouring pipe and position it.

[0010] Preferably, the mold core is provided with an edge forming block used to form the edges of the product at both ends.

[0011] The technical effect of the utility model is as follows:

[0012] The blowing assembly is communicated with the pouring pipe, so that the pouring liquid in the center of the product can be blown out during the product forming stage after the glue injection is completed, the middle part of the product is formed as a hollow structure, and the middle hollow product is formed.

[0013] The structure design of the connector can ensure that the connector is stably connected with the pouring pipe and the pouring liquid cannot enter the air pipe.

[0014] The design of the overflow well can avoid that the injection liquid in the middle part of the product is excessively blown out. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Fig. 1 is a three-dimensional schematic view of a gas-assisted forming structure,

[0016] Figure 2 Fig. 4 is a three-dimensional schematic view of the hidden edge forming block.

[0017] Figure 3 Fig. 5 is a three-dimensional schematic view of the hidden core.

[0018] Figure 4 Fig. 6 is a three-dimensional schematic view of the connector.

[0019] The text annotations shown in the figure are as follows: 1, core; 2, pouring structure; 3, pouring pipe; 4, product; 5, edge forming block; 6, connector; 7, connecting hole; 8, overflow well; 9, positioning block; 10, connector body; 11, arc-shaped port; 12, connecting pipe; 13, sealing sleeve. DETAILED DESCRIPTION

[0020] In order for those skilled in the art to better understand the technical scheme of the utility model, the utility model is described in detail below in combination with the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the utility model.

[0021] As Figures 1-4The utility model discloses a kind of gas-assisted forming structures, including for forming product 4, moulding 1, pouring pipe 3 and pouring structure 2, the middle part of pouring pipe 3 is connected with connector 6, connector 6 upper portion is equipped with connecting hole 7, connecting hole 7 is connected with blowing assembly by air pipe, the moulding 1 is also equipped with overflow well 8 being communicated with product 4 forming cavity, the overflow well 8 is used to fill pouring material blown out in product, the pouring pipe 3 is connected with connector, the connector 6 includes connector body 10, the connector body 10 is provided with connector sleeve cooperation with connecting pipe 12, connecting pipe 12 is communicated with connecting hole 7, and one-way valve is provided in connecting pipe 12, the lower end of connecting pipe 12 is matched with sealing sleeve 13, the connector body 10 lower end is equipped with arc-shaped mouth 11 being cooperated with the shape of pouring pipe 3, the moulding 1 is provided with detachable positioning block 9, the positioning block 9 is used to press and clamp pouring pipe 3 and is positioned, the moulding 1 is provided with edge forming block 5 for forming the both ends of product.

[0022] Firstly, the moulding of two mouldings 1 is completed (the state of hiding one moulding) Figure 1 is hidden), then pouring injection liquid through pouring structure 2, injection liquid enters pouring pipe 3, and then enters product forming cavity to carry out injection molding, after pouring is completed, injection liquid will be cooled, in this process, nitrogen is blown into connecting hole 7 through blowing assembly, and then nitrogen flow is formed and enters the inside of product 4 along with pouring pipe 3, so that injection liquid in product 4 which has not been cooled and fixed can be blown into overflow well 8, and injection liquid cannot be blown out after overflow well 8 is filled, so that hollow product 4 can be formed after cooling, then the moulding 1 is opened, and the formed product 4 can be taken out;In order to ensure better molding and blowing effect, pouring pipe 3 is fixed through positioning block 9, and connecting head on pouring pipe 3 is sleeved with connecting pipe 12, and sealing sleeve is sealed, and one-way valve is also designed, so that pouring liquid can be prevented from entering blowing part, and product is filled with nitrogen after molding is completed.

[0023] In the molding process, the corresponding edge forming block 5 can also be designed according to the specific shape of the edge part of the product side, so as to facilitate the molding and demolding of the edge with a specific shape.

[0024] It should be noted that, in this text, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment.

[0025] The principle and implementation mode of the present application are described by using specific examples herein, and the above examples are only used for helping to understand the method and core idea of the present application; the above description is only the preferred implementation mode of the present application, and it should be pointed out that, due to the limited nature of the expression, there are objectively infinite specific structures, and for ordinary skilled persons in the technical field, some improvements, decorations or changes can be made without departing from the principle of the present application, and the above technical features can also be combined in a proper way; the improvements, decorations, changes or combinations, or the direct application of the concept and technical solution of the present application to other occasions without improvement, should be regarded as the protection scope of the present application.

Claims

1. A gas assisted forming structure comprising a core (1), a runner (3) and a gating structure (2) for forming a product (4), characterized in that, The middle part of the pouring pipe (3) is communicated with a connector (6), and a connecting hole (7) is formed in the upper part of the connector (6); the connecting hole (7) is connected with a blowing assembly through an air pipe.

2. A gas assisted forming structure according to claim 1, wherein An overflow well (8) for pouring material blown out of the product is further formed in the mold core (1) and communicated with the product (4) forming cavity.

3. A gas assisted forming structure according to claim 1, wherein The pouring pipe (3) is communicated with a connecting head, the connector (6) comprises a connector body (10), a connecting pipe (12) which is inserted into the connector body (10) and matched with the connecting head is arranged in the connector body (10), the connecting pipe (12) is communicated with the connecting hole (7), and a one-way valve is arranged in the connecting pipe (12).

4. A gas assisted forming structure according to claim 3, wherein A sealing sleeve (13) is matched with the lower end of the connecting pipe (12), and an arc-shaped port (11) which is matched with the shape of the pouring pipe (3) is formed in the lower end of the connector body (10).

5. A gas assisted forming structure according to claim 1, wherein A detachable positioning block (9) is arranged on the mold core (1), and the positioning block (9) is used for pressing and clamping the pouring pipe (3) and positioning the pouring pipe (3).

6. A gas assisted forming structure according to claim 1, wherein An edge forming block (5) for forming the edges of the product is arranged on the mold core (1).

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