Female die core-pulling type die

Abstract

The utility model discloses a female die core-pulling type die. The female die core-pulling type die comprises an upper fixing plate and a lower fixing plate, the female die is mounted at the bottom of the upper fixing plate; a male die is mounted at the top of the lower fixing plate; a core-pulling insert is mounted on the female die, and the top end of the core-pulling insert is connected with the upper fixing plate; an inner cavity and an outer cavity are formed in the core-pulling insert, a connecting port is formed between the inner cavity and the outer cavity, an outer pipe is mounted at the top of the core-pulling insert and penetrates through the upper fixing plate, and an inner pipe is mounted in the outer pipe. According to the female mold core-pulling type mold provided by the utility model, the inner cavity and the outer cavity which are communicated with each other are arranged in the core-pulling insert, and the inner pipe and the outer pipe which are communicated with the inner cavity and the outer cavity are arranged on the core-pulling insert, so that cooling water can be conveniently injected into the core-pulling insert, and the core-pulling insert is shrunk due to cooling; the gap between the core-pulling insert and a plastic product can be enlarged, and the core-pulling insert can be conveniently pulled away.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould technical field especially relates to a female mould core-pulling mould. BACKGROUND

[0002] With the development of mould industry and the unceasing enhancement of manufacturing level, the demand of mould is increasing, and the precision requirement of mould is higher and higher.

[0003] The file with the announcement number CN207669702U discloses a kind of automobile plastic female mould core-pulling mould, including mutually connected female mould and male mould, the female mould includes female mould plate, female mould core, female mould core-pulling insert, female mould core-pulling insert pressing plate, spring, equal height screw and upper fixed plate;The male mould includes male mould core, male mould plate, nylon switch, ejector pin face plate, ejector pin bottom plate and lower fixed plate.The product of the utility model does not appear appearance bad and injection molding difficult phenomenon in production process, and improve yield rate in production process;In addition, the conventional female mould core-pulling structure needs to increase plate, cost is big, processing is complex, mould installation is difficult.This new utility model structure does not need to increase plate, processing is simple, save cost, installation is easy.

[0004] However, the female mould core-pulling insert in the mould is small after injection molding, and it is not convenient to pull out the female mould core-pulling insert.

[0005] Therefore, it is necessary to provide a female mould core-pulling mould to solve the above technical problems. UTILITY MODEL CONTENT

[0006] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a female mould core-pulling mould which can conveniently pull out the core-pulling insert.

[0007] To achieve the above purpose, the utility model adopts the following technical scheme:

[0008] The female mould core-pulling mould comprises: an upper fixed plate and a lower fixed plate, the upper fixed plate is connected with the lower fixed plate, the bottom of the upper fixed plate is provided with a female mould, the top of the lower fixed plate is provided with a male mould, the female mould is provided with a core-pulling insert, the top end of the core-pulling insert is connected with the upper fixed plate, the bottom end of the core-pulling insert extends into the cavity of the female mould, the core-pulling insert is provided with an inner cavity and an outer cavity, a connecting port is arranged between the inner cavity and the outer cavity, the inner cavity and the outer cavity are connected through the connecting port, the core-pulling insert is provided with an outer tube at the top, the outer tube penetrates through the upper fixed plate and is fixedly connected with the upper fixed plate, an inner tube is arranged in the outer tube, the outer tube and the inner tube are connected with the outer cavity and the inner cavity respectively, a return pipe is arranged on one side of the outer tube, and the inner tube and the return pipe are connected with a cooling water device.

[0009] Preferably, a plurality of connecting pieces are arranged at the position close to the top of the outer cavity, and the connecting pieces are used to connect the inner and outer shells of the core-pulling insert.

[0010] Preferably, the core-pulling insert is provided with a flange.

[0011] Preferably, a guide column is arranged on the upper fixed plate, and a guide tube is arranged on the lower fixed plate, and the guide column is inserted into the guide tube.

[0012] Preferably, a guide rod is arranged on the side of the upper fixed plate, the bottom end of the guide rod penetrates through the female mold, a limiting plate is arranged on the bottom end of the guide rod, and a spring is sleeved on the guide rod.

[0013] Compared with the prior art, the core-pulling insert has the following beneficial effects:

[0014] (1) The core-pulling insert is provided with an inner cavity and an outer cavity in communication, and an inner tube and an outer tube in communication with the inner cavity and the outer cavity are arranged on the core-pulling insert, so that the core-pulling insert can be conveniently injected with cooling water, the core-pulling insert shrinks due to cooling, the gap between the core-pulling insert and the plastic product is increased, and the core-pulling insert is conveniently pulled out;

[0015] (2) The core-pulling insert is provided with a plurality of connecting pieces arranged in the outer cavity, so that the structural stability of the core-pulling insert is improved;

[0016] (3) The core-pulling insert is provided with a flange, so that the core-pulling insert can be conveniently connected with the upper fixed plate;

[0017] (4) The core-pulling insert is provided with a guide column and a guide tube, so that the connection and guidance between the upper fixed plate and the lower fixed plate are facilitated;

[0018] (5) The core-pulling insert is provided with a guide rod and a spring, so that the mold clamping and demolding of the female mold and the male mold are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The utility model provides a structure schematic view of a female mold core-pulling mold;

[0020] Figure 2 The utility model provides a structure schematic view of a female mold core-pulling mold; Figure 1 The utility model provides a structure schematic view of a female mold core-pulling mold;

[0021] Figure 3 The utility model provides a structure schematic view of a female mold core-pulling mold; Figure 1 The utility model provides a structure schematic view of a female mold core-pulling mold;

[0022] Figure 4 The utility model provides a structure schematic view of a female mold core-pulling mold; Figure 1 The utility model provides a structure schematic view of a female mold core-pulling mold;

[0023] Wherein, the corresponding name of the reference mark is: 1 - the upper fixed plate, 2 - female mold, 3 - the lower fixed plate, 4 - male mold, 5 - core-pulling insert, 6 - outer tube, 7 - inner tube, 8 - return pipe, 9 - inner cavity, 10 - outer cavity, 11 - connecting port, 12 - connecting piece, 13 - flange, 14 - guide column, 15 - guide tube, 16 - guide rod, 17 - spring. DETAILED DESCRIPTION

[0024] The utility model is further explained below by combining with the drawings and examples, and the mode of the utility model includes but is not limited to the following examples.

[0025] As Figures 1-4 The utility model provides a female mold core-pulling mould, including: upper fixed plate 1 and lower fixed plate 3, upper fixed plate 1 is connected with lower fixed plate 3, and the bottom of upper fixed plate 1 is installed female mold 2, and the top of lower fixed plate 3 is installed male mold 4, and female mold 2 is installed core-pulling insert 5, and the top end of core-pulling insert 5 is connected with upper fixed plate 1, and the bottom end of core-pulling insert 5 extends into the cavity of female mold 2, and core-pulling insert 5 is double-shell structure, specifically, core-pulling insert 5 is equipped with inner cavity 9 and outer cavity 10, and connecting port 11 is equipped between inner cavity 9 and outer cavity 10, and inner cavity 9 and outer cavity 10 are communicated by connecting port 11, and outer tube 6 is installed at the top of core-pulling insert 5, and outer tube 6 penetrates upper fixed plate 1 and is fixedly connected with it, and inner tube 7 is installed in outer tube 6, and outer tube 6 and inner tube 7 are communicated with outer cavity 10 and inner cavity 9 respectively, and return pipe 8 is installed on the side of outer tube 6, and inner tube 7 and return pipe 8 are connected cooling water equipment, and when using, upper fixed plate 1 drops and makes female mold 2 drop and combine with male mold 3, and then core-pulling insert 5 is inserted into the cavity of female mold 2, and then injection molding can be carried out, and before demoulding, cooling water equipment injects cooling water into inner tube 7, and the cooling water enters into inner cavity 9 through inner tube, and then enters into outer cavity through connecting port 11, and finally flows back to cooling water equipment from return pipe 8 on the side of outer tube 6, and the whole core-pulling insert 5 is cooled by cooling water, especially the shell of core-pulling insert 5 shrinks due to temperature reduction, and the product part contacted with core-pulling insert 5 is cooled and shrinks, and the gap between core-pulling insert 5 and product is enlarged, so that core-pulling insert 5 is conveniently separated from product, and when demoulding, upper fixed plate 1 is lifted and drives core-pulling insert 5 to come out from the cavity of female mold 2, and then female mold 2 is lifted, so that female mold 2 is demoulded from male mold 4.

[0026] By setting inner cavity 9 and outer cavity 10 communicated in core-pulling insert 5, and installing inner tube 7 and outer tube 6 communicated with inner cavity 9 and outer cavity 10 on core-pulling insert 5, cooling water can be conveniently injected into core-pulling insert 5, so that core-pulling insert 5 shrinks due to temperature reduction, and the gap between core-pulling insert 5 and plastic product can be enlarged, and core-pulling insert 5 is conveniently separated.

[0027] Example 2:

[0028] As shown in Figure 4 A plurality of connecting pieces 12 are installed at the position close to the top of the outer cavity 10, and the connecting pieces 12 are used to connect the inner and outer shells of the core-pulling insert 5, so as to stabilize the structure of the core-pulling insert 5, and further stabilize the inner cavity 9 and the outer cavity 10, and prevent the phenomenon of adhesion between the inner and outer shells.

[0029] By installing a plurality of connecting pieces 12 in the outer cavity 10, the structural stability of the core-pulling insert 5 can be improved.

[0030] Example 3:

[0031] As shown in Figures 3-4 A flange plate 13 is installed on the core-pulling insert 5, and a bolt is used to pass through the flange plate 13 and be connected with the upper fixed plate 1, so as to connect and fix the core-pulling insert 5 with the upper fixed plate 1.

[0032] By installing a flange plate 13 on the core-pulling insert 5, the core-pulling insert 5 can be conveniently connected with the upper fixed plate 1.

[0033] Example 4:

[0034] As shown in Figures 1-2 A guide column 14 is installed on the upper fixed plate 1, and a guide tube 15 is installed on the lower fixed plate 3, the guide column 14 is inserted into the guide tube 15 and moves along the axial direction of the guide tube 15, and in use, the upper fixed plate 1 drives the guide column 14 to ascend and descend, so that the guide column 14 slides along the guide tube 15 during the clamping and demolding of the mold.

[0035] By setting the guide column 14 and the guide tube 15, the connection and guidance between the upper fixed plate 1 and the lower fixed plate 3 can be facilitated.

[0036] Example 5:

[0037] As shown in Figures 1-2 A guide rod 16 is installed on the side of the upper fixed plate 1, the bottom end of the guide rod 16 penetrates the female mold 2, a limiting plate is installed at the bottom end of the guide rod 16, and a spring 17 is sleeved on the guide rod 16, during the clamping of the mold, the upper fixed plate 1 descends, the female mold 2 is first clamped with the male mold 4, the upper fixed plate 1 continues to descend, so that the core-pulling insert 5 descends and is inserted into the cavity of the female mold 2, and at the same time, the spring 17 is contracted under stress, during the demolding of the mold, the upper fixed plate 1 rises, the spring 17 is elongated and restored, so that the core-pulling insert 5 is demolded from the cavity of the female mold 2, until the limiting plate contacts the bottom of the female mold 2, and the upper fixed plate 1 continues to rise, so that the female mold 2 is lifted through the guide rod 16, and the female mold 2 is demolded with the male mold 4.

[0038] By setting the guide rod 16 and the spring 17, the clamping and demolding of the female mold 2 and the male mold 4 can be facilitated.

[0039] Working principle: when using, the upper fixed plate 1 is lowered to make the female mold 2 descend and combine with the male mold 3, the core-pulling insert 5 is inserted into the cavity of the female mold 2, and then the injection molding can be carried out. Before demolding, the cooling water equipment injects cooling water into the inner tube 7, the cooling water enters the inner cavity 9 through the inner tube, then enters the outer cavity through the connecting port 11, and finally flows back to the cooling water equipment from the backflow pipe 8 on the side of the outer tube 6. Through the cooling water, the whole core-pulling insert 5 is cooled, especially the shell of the core-pulling insert 5 shrinks due to the temperature reduction, and the product part in contact with the core-pulling insert 5 is cooled and shrinks, so that the gap between the core-pulling insert 5 and the product is enlarged, which facilitates the separation of the core-pulling insert 5 from the product.

Claims

1. A female core-drawing mold characterized by comprising: Include: Upper fixed plate (1) and lower fixed plate (3); The bottom of the upper fixed plate (1) is provided with a female mold (2); The top of the lower fixed plate (3) is provided with a male mold (4); The female mold (2) is provided with a core-pulling insert (5), and the top end of the core-pulling insert (5) is connected with the upper fixed plate (1); The core-pulling insert (5) is provided with an inner cavity (9) and an outer cavity (10), and a connecting port (11) is arranged between the inner cavity (9) and the outer cavity (10). The top of the core-pulling insert (5) is provided with an outer tube (6), the outer tube (6) penetrates the upper fixed plate (1), an inner tube (7) is arranged in the outer tube (6), and the outer tube (6) and the inner tube (7) are respectively connected with the outer cavity (10) and the inner cavity (9). One side of the outer tube (6) is provided with a return pipe (8).

2. A core-draw mould of a female mould (2) according to claim 1, characterised in that, A plurality of connecting plates (12) are arranged in the outer cavity (10).

3. A core-draw mold of a female mold (2) according to claim 1, characterized by, The core-pulling insert (5) is provided with a flange plate (13).

4. A core-draw mold of a female mold (2) according to claim 1, characterized by The fixed plate is provided with a guide column (14), and the lower fixed plate (3) is provided with a guide pipe (15).

5. A core-draw mold of a female mold (2) according to claim 1, characterized by, The side of the upper fixed plate (1) is provided with a guide rod (16), the bottom end of the guide rod (16) penetrates the female mold (2), and the bottom end of the guide rod (16) is provided with a limiting plate.

6. A core-draw mould of a female mould (2) according to claim 5, characterised in that, The guide rod (16) is provided with a spring (17).

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