3D printing forming mold

Abstract

The utility model relates to the technical field of dies, in particular to a 3D printing forming die, which comprises a lower die, a cooling runner and a plurality of die cores, the cooling runner and the plurality of die cores are arranged on the lower die, the cooling runner is communicated with the plurality of die cores, the die cores are made by 3D printing, and each die core comprises a supporting part and a forming part, the forming part is arranged at the top of the supporting part; the width of the supporting part is increased from one end connected with the forming part to the other end; a cooling hole is formed between the supporting part and the forming part, and the cooling runner is arranged in the cooling hole; the width ratio of the top to the bottom of the supporting part is 1: 3 to 1: 5; and the ratio of the aperture of the cooling hole to the diameter of the top of the supporting part is 1: 2 to 1.5: 2. The mold core is formed through 3D printing, the cooling hole of the mold core and the mold core are machined at the same time, and the problem that the mold core deforms due to the fact that the mold core is formed firstly and then the cooling hole is formed is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould technical field especially is a kind of mould of 3D printing forming. BACKGROUND

[0002] For small shell products, one of the difficulties is cooling problem: due to the small size of the product, the core is also necessarily small, the small core leads to small strength, so that the deformation problem of core needs to be considered when machining enough holes for cooling. SUMMARY

[0003] The utility model provides a kind of mould of 3D printing forming for the prior art problem, the cooling hole of core is prepared simultaneously with core by the way of 3D printing, to avoid deformation problem.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme:

[0005] The utility model provides a kind of mould of 3D printing forming, including lower mould, cooling flow channel and a plurality of cores, cooling flow channel and a plurality of cores are set in lower mould, cooling flow channel is communicated with a plurality of cores, the core is made of 3D printing, and the core includes support part and forming part, the forming part is set at the top of support part, and the width between the one end of support part connected with forming part and the other end increases;Cooling hole is arranged between support part and forming part, and cooling flow channel is installed in cooling hole.

[0006] The width ratio of the top and bottom of the support part is 1:3 to 1:5, and the ratio of the hole diameter of the cooling hole to the diameter of the top of the support part is 1:2 to 1.5:2.

[0007] Further, the cooling flow channel includes a mounting portion and two bifurcated portions in communication with the mounting portion, the two sides of the bifurcated portions are respectively communicated with cooling portions, and the cooling portions are used for inserting into the cooling holes; the middle part of the lower mould is provided with a mounting hole, the mounting portion is installed in the mounting hole, and the bottom of the mounting portion is provided with a communication port for external connection of a cooling source.

[0008] Further, the connecting part of the support part and the forming part is provided with a positioning hole on one side, and the top of the cooling portion is provided with a positioning portion, which is inserted into the positioning hole.

[0009] Further, the positioning hole and the cooling hole are arranged at an acute angle, and the angle of the acute angle is 30-60°; the posture of the positioning portion is adapted to the posture of the positioning hole.

[0010] Further, the top of the mounting portion is provided with a protrusion.

[0011] Further, the two sides of the support part are respectively provided with straight faces.

[0012] The utility model discloses the beneficial effects of the utility model: the utility model discloses through 3D printing forming mould core, let mould core's cooling hole and mould core complete processing simultaneously, avoid the deformation problem of mould core caused by forming mould core after forming cooling hole. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is the schematic diagram of the utility model.

[0014] Fig. 2 It is the internal schematic diagram of the mould core of the utility model.

[0015] Fig. 3 It is the sectional view of the mould core of the utility model.

[0016] Fig. 4 It is the schematic diagram of the cooling runner of the utility model.

[0017] Sign: 1 - lower mould, 2 - cooling runner, 3 - mould core, 21 - installation portion, 22 - bifurcation portion, 23 - cooling portion, 24 - positioning portion, 25 - protrusion, 26 - extension portion, 31 - support portion, 32 - forming portion, 33 - cooling hole, 34 - positioning hole, 35 - straight face. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of those skilled in the art, the utility model is further explained below in conjunction with examples and drawings, and the content mentioned in the embodiment is not a limitation of the utility model. The utility model is described in detail below in conjunction with the drawings.

[0019] As Figs. 1 to 4 The utility model discloses a kind of moulds of 3D printing forming, including lower mould 1, cooling runner 2 and several mould cores 3, cooling runner 2 and several mould cores 3 are all set in lower mould 1, cooling runner 2 and several mould cores 3 are communicated, the mould core 3 is made of 3D printing, mould core 3 includes support portion 31 and forming portion 32, forming portion 32 is set at the top of support portion 31, support portion 31 increases between the width between one end and the other end of connecting forming portion 32;Cooling hole 33 is arranged between support portion 31 and forming portion 32, cooling runner 2 is installed in cooling hole 33;

[0020] The ratio of the width of the top and bottom of the support portion 31 is 1:3 to 1:5, and the ratio of the hole diameter of the cooling hole 33 to the diameter of the top of the support portion 31 is 1:2 to 1.5:2.

[0021] The utility model discloses a 3D printing forming mould core 3, preferably directly with cooling runner 2 as the framework to 3D print the mould core 3, so that the mould core 3 has the cooling hole 33 and fixes with the cooling runner 2 after forming, so that the aperture of cooling hole 33 is enough big, and the mould core 3 is not affected to deform.

[0022] Specifically, the material of the mould core 3 is metal, which ensures the strength of the mould core 3, and the 3D printed mould core 3 is calculated in size before preparation to ensure that the aperture of the cooling hole 33 after forming does not cause insufficient strength of the mould core 3.

[0023] In the embodiment, the cooling runner 2 includes a mounting portion 21 and two bifurcated portions 22 in communication with the mounting portion 21, and the two sides of the bifurcated portions 22 are respectively in communication with cooling portions 23 for inserting into the cooling holes 33; the middle portion of the lower die 1 is provided with a mounting hole, and the mounting portion 21 is arranged in the mounting hole; the bottom of the mounting portion 21 is provided with a communication port for connecting an external cooling source.

[0024] In actual use, the two sides of the bifurcated portion 22 are respectively connected with extension portions 26, and the two sides of the extension portions 26 are in communication with the cooling portions 23, that is, one cooling runner 2 is preferably connected with eight mould cores 3, achieving the effect of one-time injection molding of eight products.

[0025] Specifically, the connecting portion between the support portion 31 and the forming portion 32 is provided with a positioning hole 34 on one side, and the top of the cooling portion 23 is provided with a positioning portion 24 inserted into the positioning hole 34. That is, the positioning hole 34 and the positioning portion 24 are matched to ensure the reliability of the assembly between the cooling portion 23 and the mould core 3, that is, to ensure that they do not separate.

[0026] Specifically, the positioning hole 34 and the cooling hole 33 are arranged at an acute angle, and the angle of the acute angle is 30-60°; the posture of the positioning portion 24 is adapted to the posture of the positioning hole 34.

[0027] In the embodiment, the top of the mounting portion 21 is provided with a protrusion 25 for positioning with the upper die or other components of the lower die 1.

[0028] In the embodiment, the two sides of the support portion 31 are respectively provided with straight faces 35 for abutting positioning with other components (not shown in the figure) of the lower die 1.

[0029] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application is disclosed as above in the preferred embodiment, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the disclosed technical content without departing from the technical solution of the present application, and any equivalent embodiment with equivalent changes is equivalent to the above embodiment. Any simple modification, equivalent change and modification of the above embodiment according to the present application technical solution are within the scope of the present application technical solution.

Claims

1. A mold for 3D printing forming, comprising a lower mold, a cooling runner and a plurality of mold cores, the cooling runner and the plurality of mold cores are arranged in the lower mold, the cooling runner and the plurality of mold cores are communicated, characterized in that: The mold core is made of 3D printing, and the mold core comprises a supporting part and a forming part, the forming part is arranged at the top of the supporting part, the width of the supporting part increases from one end to the other end of the connecting forming part; cooling holes are arranged between the supporting part and the forming part, and cooling flow channels are arranged in the cooling holes; The ratio of the width of the top and the bottom of the supporting part is 1:3 to 1:5, and the ratio of the diameter of the cooling hole to the diameter of the top of the supporting part is 1:2 to 1.5:

2.

2. The 3D-printed mold of claim 1, wherein: The cooling flow channel comprises a mounting part and two bifurcated parts in communication with the mounting part, the two sides of the bifurcated part are respectively communicated with a cooling part for inserting into the cooling hole; the middle part of the lower mold is provided with a mounting hole, the mounting part is arranged in the mounting hole, and the bottom of the mounting part is provided with a communication port for connecting an external cooling source.

3. The 3D-printed mold of claim 2, wherein: The connecting part of the supporting part and the forming part is provided with a positioning hole on one side, and the top of the cooling part is provided with a positioning part which is inserted into the positioning hole.

4. The 3D-printed mold of claim 3, wherein: The positioning hole and the cooling hole are arranged at an acute angle, and the angle of the acute angle is 30-60°; the posture of the positioning part is adapted to the posture of the positioning hole.

5. The 3D-printed mold of claim 2, wherein: The top of the mounting part is provided with a protrusion.

6. The 3D-printed mold of claim 1, wherein: The two sides of the supporting part are respectively provided with straight faces.

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