Injection mold based on 3D printing

Abstract

The utility model discloses an injection mold based on 3d printing, which comprises an upper mold and a lower mold, the lower mold comprises a bottom plate, an ejection structure, a lower support plate and a lower mold plate, the lower mold plate is provided with a lower mold core, and the lower support plate is provided with a core; a spiral cooling water way formed through 3D printing is arranged in the core in the height direction of the core and connected with a water inlet pipe and a water outlet pipe, and the input end of the water inlet pipe and the output end of the water outlet pipe are both exposed out of the lower supporting plate. A plurality of cold air blowing pipelines arranged in the height direction of the core are arranged on the periphery of the spiral cooling water channel in the core, a plurality of air outlets are formed in the cold air blowing pipelines in the extending direction of the cold air blowing pipelines, the cold air blowing pipelines are jointly connected with an air inlet pipeline, and the input end of the air inlet pipeline is exposed out of the ejection structure. And the cooling water path is matched with the cold air blowing pipeline, so that the cooling speed is higher, and the production efficiency of products is further improved.

Description

Technical Field

[0001] The utility model relates to the field of injection mold technology, in particular to an injection mold based on 3D printing. Background Art

[0002] 3D printing is an advanced technology used to manufacture three-dimensional objects. Compared with traditional industrial manufacturing, it does not require molds or large-scale production lines. Simply put, 3D printing is to build objects by stacking materials layer by layer on a 3D printer based on a computer-generated three-dimensional model. It is easy to operate. The 3D model is sent to the printer through computer software, and the appropriate material is selected, and the printer can automatically complete the printing process.

[0003] With the updating and advancement of science and technology, the injection molding requirements for product appearance are getting higher and higher, and the appearance requirements for chargers are becoming more and more stringent, which poses higher challenges to mold cooling design. In the prior art, a cooling pipeline is arranged in the core of the mold. The cooling pipeline is formed by connecting multiple sections of straight pipes in a U-shaped arrangement. The cooling pipeline under this structure is difficult to cool the core evenly, resulting in uneven cooling of the product before demolding, which in turn causes the molded product to have an uneven surface, affecting the appearance of the product.

[0004] Therefore, it is necessary to design a new technical solution to solve the above problems. Utility Model Content

[0005] In view of this, the utility model aims to solve the deficiencies in the prior art, and its main purpose is to provide an injection mold based on 3D printing. A 3D printed spiral cooling water channel is arranged in the core, and a 3D printing molding method is adopted to facilitate the production of the spiral cooling water channel. A plurality of cold air blowing pipelines are arranged on the periphery of the spiral cooling water channel in the core, and the cold air blowing pipeline is provided with a plurality of air outlets along its own extension direction, so that the cooling inside the core is more uniform, and the cooperation between the cooling water channel and the cold air blowing pipeline makes the cooling speed faster, thereby improving the production efficiency of the product.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A 3D printing-based injection mold, comprising an upper mold and a lower mold, wherein the upper mold is provided with an upper mold core, and the lower mold comprises a bottom plate, an ejection structure, a lower support plate and a lower mold plate arranged in sequence from bottom to top, wherein the lower mold plate is provided with a lower mold core, and a core is arranged on the lower support plate, wherein the core is penetrated in the lower mold core, and the upper mold core, the lower mold core and the core together form an injection mold cavity for molding a product;

[0008] A spiral cooling water channel formed by 3D printing is arranged inside the core along the height direction of the core. The 3D printing method is adopted to facilitate the production of the spiral cooling water channel. The spiral cooling water channel is connected with a water inlet pipe and a water outlet pipe. The input end of the water inlet pipe and the output end of the water outlet pipe are both exposed outside the lower support plate;

[0009] A plurality of cold air blowing pipelines arranged along the height direction of the core are provided on the periphery of the spiral cooling water channel in the core, and the cold air blowing pipeline is provided with a plurality of air outlets along its extension direction. The plurality of cold air blowing pipelines are connected together with an air intake pipeline, and the input end of the air intake pipeline is exposed outside the ejection structure, so that the cooling inside the core is more uniform, and the cooperation between the cooling water channel and the cold air blowing pipeline makes the cooling speed faster, thereby improving the production efficiency of the product.

[0010] As a preferred solution, the ejection structure is provided with two inclined ejector components arranged opposite to each other, and the inclined ejector components are provided with a clamping protrusion for forming a clamping groove, and the two clamping protrusions are exposed on opposite sides of the core.

[0011] As a preferred solution, the inclined ejector assembly includes a mounting seat and an inclined ejector rod, one end of the inclined ejector rod is slidably connected to the mounting seat, the other end of the inclined ejector rod can pass through the top of the core, and the clamping protrusion is arranged on the side of the inclined ejector rod.

[0012] As a preferred solution, the ejection structure includes two side support blocks arranged at a distance from each other and an upper top plate and a lower top plate arranged between the two side support blocks. The air intake pipe is arranged on the lower top plate. The side support block is provided with an avoidance groove for the input end of the air intake pipe to avoid, and the input end of the air intake pipe extends out of the side support block from the avoidance groove.

[0013] As a preferred solution, the cold air blowing pipelines are four pipelines arranged in a square shape, and the four cold air blowing pipelines are respectively located at the four corners of the core.

[0014] As a preferred solution, the lower mold core comprises a first splicing block and a second splicing block spliced ​​to each other, and the first splicing block and / or the second splicing block are provided with a protrusion for forming a pattern.

[0015] As a preferred solution, the number of the cores is two and spaced apart from each other. Accordingly, the lower mold core is provided with two slots for the cores to pass through, and the cores are placed in the slots.

[0016] As a preferred solution, the top of the lower mold plate is concavely provided with a groove, and four lower mold cores are arranged in a square shape in the groove. The arrangement of the four lower mold cores can form eight products at one time, with high production efficiency.

[0017] As a preferred solution, the upper mold includes a top plate, a hot runner plate, an upper support plate, and an upper mold plate which are arranged in sequence from top to bottom, and the upper mold core is arranged on the upper mold plate.

[0018] As a preferred solution, the upper support plate is provided with a bull horn gate, and the output end of the bull horn gate passes through the lower mold core and extends into the injection mold cavity.

[0019] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0020] Mainly, a 3D printed spiral cooling water channel is arranged in the core, and a 3D printing method is adopted to facilitate the production of the spiral cooling water channel. In addition, a plurality of cold air blowing pipelines are arranged on the periphery of the spiral cooling water channel in the core. The cold air blowing pipeline is provided with a plurality of air outlets along its extension direction, so that the cooling inside the core is more uniform, and the cooperation between the cooling water channel and the cold air blowing pipeline makes the cooling speed faster, thereby improving the production efficiency of the product.

[0021] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of a preferred embodiment of the utility model;

[0023] Figure 2 It is a three-dimensional schematic diagram of the lower mold of the preferred embodiment of the utility model;

[0024] Figure 3 It is a schematic diagram of the installation of the core of the preferred embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the coordination of the spiral cooling water circuit and the cooling air blowing pipeline in a preferred embodiment of the utility model;

[0026] Figure 5 It is a cross-sectional view of a preferred embodiment of the utility model;

[0027] Figure 6 It is another cross-sectional view of a preferred embodiment of the utility model.

[0028] Description of the accompanying drawings:

[0029] 10. Upper mold 11. Upper mold core

[0030] 12. Top plate 13. Hot runner plate

[0031] 14. Upper support plate 15. Upper template

[0032] 20. Lower mold 21. Bottom plate

[0033] 22. Ejection structure 221. Side support block

[0034] 222, upper top plate 223, lower top plate

[0035] 224, avoidance groove 23, lower support plate

[0036] 24. Lower template 241. Groove

[0037] 25. Lower mold core 251. First splicing block

[0038] 252, second splicing block 253, slot

[0039] 30, core 40, injection mold cavity

[0040] 50. Spiral cooling water circuit 51. Water inlet pipe

[0041] 52. Water outlet pipe 60. Air conditioning pipe

[0042] 61. Air outlet 62. Air inlet pipe

[0043] 70. Lifting assembly 71. Card convex

[0044] 72. Mounting seat 73. Slanted ejector

[0045] 80. Bull horn gate. DETAILED DESCRIPTION

[0046] First of all, it should be noted that in the description of the present invention, the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as a limitation on the present invention.

[0047] Please refer to Figures 1 to 6 As shown, it shows the specific structure of a preferred embodiment of the utility model, including an upper mold 10 and a lower mold 20.

[0048] The upper mold 10 is provided with an upper mold core 11, and the lower mold 20 includes a bottom plate 21, an ejection structure 22, a lower support plate 23 and a lower mold plate 24 arranged in sequence from bottom to top. The lower mold plate 24 is provided with a lower mold core 25, and a core 30 is arranged on the lower support plate 23. The core 30 is inserted into the lower mold core 25. The upper mold core 11, the lower mold core 25 and the core 30 together form an injection mold cavity 40 for product molding.

[0049] A spiral cooling water channel 50 formed by 3D printing is arranged in the core 30 along the height direction of the core 30. The 3D printing method is adopted to facilitate the production of the spiral cooling water channel 50. The spiral cooling water channel 50 is connected with a water inlet pipe 51 and a water outlet pipe 52. The input end of the water inlet pipe 51 and the output end of the water outlet pipe 52 are both exposed outside the lower support plate 23; a plurality of cold air blowing pipelines 60 arranged along the height direction of the core 30 are arranged on the periphery of the spiral cooling water channel 50 in the core 30. The cold air blowing pipeline 60 is provided with a plurality of air outlets 61 along its own extension direction. The plurality of cold air blowing pipelines 60 are connected together with an air inlet pipeline 62. The input end of the air inlet pipeline 62 is exposed outside the ejection structure 22, so that the cooling inside the core 30 is more uniform. The cooperation between the cooling water channel and the cold air blowing pipeline 60 makes the cooling speed faster, thereby improving the production efficiency of the product.

[0050] See also Figure 1 and Figure 5 As shown, the ejection structure 22 includes two side support blocks 221 arranged at intervals and an upper top plate 222 and a lower top plate 223 arranged between the two side support blocks 221. The upper and lower ends of the side support block 221 are respectively against the lower support plate 23 and the bottom plate 21. The air intake pipe 62 is arranged on the lower top plate 223. The side support block 221 is provided with an avoidance groove 224 for the input end of the air intake pipe 62 to avoid. The input end of the air intake pipe 62 extends out of the side support block 221 from the avoidance groove 224.

[0051] See also Figure 3 and Figure 4 As shown, the ejection structure 22 is provided with two inclined ejector components 70 arranged opposite to each other, and the inclined ejector components 70 are provided with a clamping protrusion 71 for forming a clamping groove, and the two clamping protrusions 71 are exposed on the opposite sides of the core 30, and the inclined ejector component 70 includes a mounting seat 72 and an inclined ejector rod 73, one end of the inclined ejector rod 73 is slidably connected to the mounting seat 72, and the other end of the inclined ejector rod 73 can pass through the top of the core 30, and the clamping protrusion 71 is arranged on the side of the inclined ejector rod 73; in this embodiment, the cold air blowing pipeline 60 is four pipelines arranged in a square shape, and the four cold air blowing pipelines 60 are respectively located at the four corner edges of the core 30.

[0052] See also Figure 2As shown, the lower mold core 25 includes a first splicing block 251 and a second splicing block 252 which are spliced ​​with each other, and the first splicing block 251 and / or the second splicing block 252 are provided with a protrusion for forming a pattern (not shown in the figure); in this embodiment, the core 30 is arranged in two intervals, and accordingly, the lower mold core 25 is provided with two slots 253 for the core 30 to pass through, and the core 30 is placed in the slot 253. The top of the lower template 24 is concavely provided with a groove 241, and four lower mold cores 25 are provided. The four lower mold cores 25 are spliced ​​in a square shape in the groove 241. The arrangement of four lower mold cores 25 can form eight products at one time, and the production efficiency is high.

[0053] See also Figure 5 and Figure 6 As shown, the upper mold 10 includes a top plate 12, a hot runner plate 13, an upper support plate 14, and an upper mold plate 15 which are arranged in sequence from top to bottom. The upper mold core 11 is arranged on the upper mold plate 15. The upper support plate 14 is provided with a bull horn gate 80. The output end of the bull horn gate 80 passes through the lower mold core 25 and extends into the injection mold cavity 40.

[0054] The design focus of this utility model is:

[0055] Mainly, a 3D printed spiral cooling water channel is arranged in the core, and a 3D printing method is adopted to facilitate the production of the spiral cooling water channel. In addition, a plurality of cold air blowing pipelines are arranged on the periphery of the spiral cooling water channel in the core. The cold air blowing pipeline is provided with a plurality of air outlets along its extension direction, so that the cooling inside the core is more uniform, and the cooperation between the cooling water channel and the cold air blowing pipeline makes the cooling speed faster, thereby improving the production efficiency of the product.

[0056] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An injection mold based on 3D printing, comprising an upper mold and a lower mold, wherein the upper mold is provided with an upper mold core, and the lower mold comprises a bottom plate, an ejection structure, a lower support plate and a lower mold plate arranged in sequence from bottom to top, wherein the lower mold plate is provided with a lower mold core, and a core is provided on the lower support plate, wherein the core is penetrated in the lower mold core, and the upper mold core, the lower mold core and the core together form an injection mold cavity for molding a product; characterized in that: A spiral cooling water channel formed by 3D printing is arranged inside the core along the height direction of the core, and the spiral cooling water channel is connected with a water inlet pipe and a water outlet pipe, and the input end of the water inlet pipe and the output end of the water outlet pipe are both exposed outside the lower support plate; A plurality of cold air blowing pipelines are arranged along the height direction of the core at the periphery of the spiral cooling water channel in the core, and the cold air blowing pipelines are provided with a plurality of air outlets along their extension direction. The plurality of cold air blowing pipelines are connected together with an air intake pipeline, and the input end of the air intake pipeline is exposed outside the ejection structure.

2. The 3D printing-based injection mold according to claim 1, characterized in that: The ejection structure is provided with two inclined ejection components which are arranged opposite to each other. The inclined ejection components are provided with a clamping protrusion for forming a clamping groove. The two clamping protrusions are exposed at two opposite sides of the core.

3. The 3D printing-based injection mold according to claim 2, characterized in that: The inclined ejector assembly comprises a mounting seat and an inclined ejector rod, one end of the inclined ejector rod is slidably connected to the mounting seat, the other end of the inclined ejector rod can pass through the top of the core, and the clamping protrusion is arranged on the side of the inclined ejector rod.

4. The 3D printing-based injection mold according to claim 1, characterized in that: The ejection structure includes two side support blocks arranged at intervals and an upper top plate and a lower top plate arranged between the two side support blocks. The air intake pipe is arranged on the lower top plate. The side support block is provided with an avoidance groove for the input end of the air intake pipe to avoid. The input end of the air intake pipe extends out of the side support block from the avoidance groove.

5. The 3D printing-based injection mold according to claim 1, characterized in that: The four cold air blowing pipelines are arranged in a square shape, and the four cold air blowing pipelines are respectively located at the four corners of the core.

6. The 3D printing-based injection mold according to claim 1, characterized in that: The lower mold core comprises a first splicing block and a second splicing block spliced ​​to each other, and the first splicing block and / or the second splicing block are provided with a protrusion for forming a pattern.

7. The 3D printing-based injection mold according to claim 1, characterized in that: There are two cores arranged at a distance from each other. Correspondingly, the lower mold core is provided with two slots for the cores to pass through, and the cores are placed in the slots.

8. The 3D printing-based injection mold according to claim 7, characterized in that: The top of the lower mold plate is concavely provided with a groove, and four lower mold cores are provided. The four lower mold cores are spliced ​​in a square shape and arranged in the groove.

9. The 3D printing-based injection mold according to claim 1, characterized in that: The upper mold comprises a top plate, a hot runner plate, an upper support plate, and an upper mold plate which are arranged in sequence from top to bottom, and the upper mold core is arranged on the upper mold plate.

10. The 3D printing-based injection mold according to claim 9, characterized in that: The upper support plate is provided with a bull horn gate, and the output end of the bull horn gate passes through the lower mold core and extends into the injection mold cavity.

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