CN113977818A - Manufacturing process of precise plastic mold - Google Patents
Manufacturing process of precise plastic mold Download PDFInfo
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- CN113977818A CN113977818A CN202111269169.3A CN202111269169A CN113977818A CN 113977818 A CN113977818 A CN 113977818A CN 202111269169 A CN202111269169 A CN 202111269169A CN 113977818 A CN113977818 A CN 113977818A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000004891 communication Methods 0.000 claims abstract description 32
- 238000005520 cutting process Methods 0.000 claims abstract description 16
- 238000013461 design Methods 0.000 claims abstract description 14
- 238000005242 forging Methods 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims abstract description 10
- 239000007924 injection Substances 0.000 claims abstract description 10
- 238000003754 machining Methods 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims description 24
- 238000000227 grinding Methods 0.000 claims description 20
- 239000000835 fiber Substances 0.000 claims description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 16
- 239000000956 alloy Substances 0.000 claims description 12
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 238000013016 damping Methods 0.000 claims description 12
- 239000011148 porous material Substances 0.000 claims description 12
- 238000002955 isolation Methods 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 239000007769 metal material Substances 0.000 claims description 8
- 238000003801 milling Methods 0.000 claims description 8
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 4
- 239000010425 asbestos Substances 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 238000011049 filling Methods 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- 229910052895 riebeckite Inorganic materials 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 238000011068 loading method Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
Images
Classifications
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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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3835—Designing moulds, e.g. using CAD-CAM
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/007—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass injection moulding tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/24—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass dies
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to a manufacturing process of a precise plastic mold, which comprises the following steps: a, setting an injection mold drawing: b, forging an upper die shell blank or a lower die shell blank according to the design of the drawing of the step A: c, finely cutting an upper shell groove or a lower shell groove according to the design of the drawing of the step A, and machining an embedded channel: d, preparing an embedded body with a hollow three-dimensional communication structure: assembling the embedded body with a hollow three-dimensional communication structure with the upper shell groove or the lower shell groove; welding a groove surface cover and finely cutting an upper die cavity or a lower die cavity: according to the invention, the upper shell groove and the lower shell groove are formed in the upper die shell blank or the lower die shell blank, the hollow three-dimensional communication structure embedded bodies are filled in the upper shell groove and the lower shell groove, then the groove surface cover is welded, the filled hollow three-dimensional communication structure embedded bodies are light in weight and good in supporting structure performance, the overall weight of a single upper die or a single lower die can be reduced by more than one third, and the manufacturing of the overall light weight of the die is facilitated.
Description
Technical Field
The invention relates to the technical field of injection mold preparation, in particular to a manufacturing process of a precision plastic mold.
Background
The injection mold is generally used for injection molding of plastic parts, the existing injection mold is basically formed by directly and finely cutting profile steel on a CNC (computer numerical control) machine tool, the fine cutting process is complex, the total weight of the obtained injection mold is heavy, for the injection mold of some large parts, a heavy upper mold and a heavy lower mold are adopted, and the power required during mold opening is also large.
In the disclosed technology, some documents for preparing a mold using a 3D printer are presented, but these documents are disclosed only for the fabrication of auxiliary parts of the mold, such as a cooling pipe, a ram, and the like. The reduced weight of these accessory components does not substantially reduce the weight of the overall mold.
Disclosure of Invention
The present invention is directed to a process for manufacturing a precision plastic mold, which solves the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a manufacturing process of a precise plastic mold comprises the following steps:
a, setting an injection mold drawing:
setting a plastic mold by adopting 3D design software, and dividing the mold into an upper mold and a lower mold; the upper die comprises an upper die cavity and an upper die shell, the upper die shell comprises an upper shell groove, the lower die comprises a lower die cavity and a lower die shell, and the lower die shell comprises a lower shell groove;
b, forging an upper die shell blank or a lower die shell blank according to the design of the drawing of the step A:
heating low-alloy cold-work die steel, feeding the low-alloy cold-work die steel into a forging machine, forging and quenching for multiple times to obtain an upper die shell blank or a lower die shell blank, and roughly milling a reference surface after annealing the upper die shell blank or the lower die shell blank;
c, finely cutting an upper shell groove or a lower shell groove according to the design of the drawing of the step A, and machining an embedded channel:
after rough milling of the reference surface is completed, the reference surface is sent to a CNC (computer numerical control) machine tool to finish the upper die shell blank or the lower die shell blank to obtain an upper shell groove and a lower shell groove; then, the groove surface of the upper shell groove or the groove surface of the lower shell groove is finely cut, and a plurality of embedded grooves which are uniformly arranged are processed on the groove surface of the upper shell groove or the groove surface of the lower shell groove;
d, preparing an embedded body with a hollow three-dimensional communication structure:
manufacturing an embedding body with a hollow three-dimensional communication structure on the groove surface of the upper shell groove or the groove surface of the lower shell groove by using a single metal material by adopting a selective laser melting forming method;
assembling the embedded body with a hollow three-dimensional communication structure with the upper shell groove or the lower shell groove;
feeding the embedded body with the hollow three-dimensional communication structure into a CNC grinding machine for fine grinding, so that the embedded body can be embedded into an embedded channel of the groove surface of the upper shell groove or the groove surface of the lower shell groove, and filling a fiber isolation layer between the embedded body with the hollow three-dimensional communication structure and the embedded channel;
welding a groove surface cover and finely cutting an upper die cavity or a lower die cavity:
e, welding the cast groove surface cover with the upper shell groove or the lower shell groove after the step E is finished; after welding, the workpiece is sent to a CNC machine tool to carry out fine cutting and die sinking on the upper die cavity and the lower die cavity; after the die opening is finished, sending the die into a CNC grinding machine for fine grinding, so that all reference surfaces of the upper die shell and the upper die cavity or the lower die shell and the lower die cavity meet the requirements set by a drawing; and after finishing fine grinding, feeding the workpiece into a CNC machine tool to finish the opening of the accessory.
Preferably, in the step a), the pore structure, the pore size and the pore density of the hollow three-dimensional communicating structure embedded body are set according to the selected properties of the single metal material.
Preferably, in the step B), the low-alloy cold-work die steel is one of the steels of 9Mn2V, 9SiCr, 9CrWMl3, CrWMn and Cr 2.
Preferably, the embedding channel is provided with uniformly arranged damping grooves.
Preferably, in the step D), the preparing of the insert having the hollow three-dimensional communication structure includes:
the method comprises the steps of loading design parameters of an embedded body with a hollow three-dimensional communicating structure to a control end of a 3D printer, uniformly paving a layer of metal powder on a substrate by using a powder paving roller, controlling laser beams to selectively perform laser melting on the current layer by using a computer, reducing the unit height of a processing platform after the melted metal powder is cooled and solidified, raising the unit height of a powder feeding platform, paving the metal powder on the processed sheet layer by using the powder paving roller, starting scanning a new layer by using the laser beams, and thus forming the embedded body with the hollow three-dimensional communicating structure by stacking layer by layer.
Preferably, the insert body with the hollow three-dimensional communication structure is provided with an insert bar combined with the insert groove body.
Preferably, the embedded bar block is provided with damping teeth matched with the damping grooves.
Preferably, the fiber isolation layer is made of one of metal fiber, carbon fiber, asbestos fiber and glass fiber.
Preferably, the thickness of the fibrous insulation layer is 1-3 mm.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the upper shell groove and the lower shell groove are formed in the upper die shell blank or the lower die shell blank, the hollow three-dimensional communication structure embedded bodies are filled in the upper shell groove and the lower shell groove, then the groove surface cover is welded, the filled hollow three-dimensional communication structure embedded bodies are light in weight and good in supporting structure performance, the overall weight of a single upper die or a single lower die can be reduced by more than one third, and the manufacturing of the overall light weight of the die is facilitated.
Drawings
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a flow chart of the preparation process of the present invention using the upper mold as an example;
FIG. 3 is a flow chart of the preparation process of the present invention using the lower mold as an example.
Detailed Description
The present invention is described in detail below with reference to the attached drawings.
According to the invention, the upper shell groove and the lower shell groove are formed in the upper die shell blank or the lower die shell blank, the hollow three-dimensional communication structure embedded bodies are filled in the upper shell groove and the lower shell groove, then the groove surface cover is welded, the filled hollow three-dimensional communication structure embedded bodies are light in weight and good in supporting structure performance, the overall weight of a single upper die or a single lower die can be reduced by more than one third, and the manufacturing of the overall light weight of the die is facilitated.
Specifically, reference is made to the following description.
Example 1: the present embodiment is described in detail with reference to the fabrication of the upper mold as an implementation, and referring to fig. 1 and 2,
a manufacturing process of a precise plastic mold comprises the following steps:
a, setting an injection mold drawing:
setting a plastic mold by adopting 3D design software, and dividing the mold into an upper mold and a lower mold; the upper die comprises an upper die cavity and an upper die shell, the upper die shell comprises an upper shell groove, the lower die comprises a lower die cavity and a lower die shell, and the lower die shell comprises a lower shell groove; the pore structure, pore size and pore density of the embedded body with the hollow three-dimensional communication structure are set according to the performance of the selected single metal material.
B, forging an upper die shell blank according to the design of the drawing of the step A:
heating low-alloy cold-work die steel, feeding the low-alloy cold-work die steel into a forging machine, forging and quenching for multiple times to obtain an upper die shell blank 1, roughly milling a reference surface after annealing the upper die shell blank 1, and forming an upper die cavity machining reserved part 2 in the middle of the upper die shell blank 1; the low-alloy cold-work die steel is made of one of 9Mn2V, 9SiCr, 9CrWMl3, CrWMn and Cr2 section steel.
C, finely cutting an upper shell groove according to the design of the drawing of the step A, and machining an upper embedded groove 6:
after rough milling of the datum plane is completed, the datum plane is sent to a CNC (computerized numerical control) machine tool to finish the upper die shell blank 1 to obtain a plurality of upper shell grooves 3, installation through holes 4 to be processed, clamping positions to be correspondingly installed and the like are reserved in advance according to the connection between the upper die and other parts when the upper shell grooves 3 are processed; then, the groove surface of the upper shell groove 3 is finely cut, and a plurality of upper embedded grooves 6 which are uniformly arranged are processed on the groove surface of the upper shell groove;
preparing an embedded body 7 with a hollow three-dimensional communication structure:
manufacturing an embedded body with a hollow three-dimensional communication structure on the groove surface of the upper shell groove by using a single metal material by adopting a selective laser melting forming method; specifically, a 3D printer is adopted, design parameters of an embedded body with a hollow three-dimensional communicating structure are loaded to a control end of the 3D printer, a layer of metal powder is uniformly paved on a substrate by using a powder paving roller, laser beams are controlled by a computer to selectively perform laser melting on the current layer, after the melted metal powder is cooled and solidified, a unit height of a processing platform is reduced, a unit height of a powder feeding platform is increased, the powder paving roller paves the metal powder on the machined sheet layer again, the laser beams start to scan a new layer, and the embedded body 7 with the hollow three-dimensional communicating structure is formed by stacking layer upon layer.
E, assembling the embedded body 7 with a hollow three-dimensional communication structure and the upper shell groove 3;
feeding the embedded body 7 with the hollow three-dimensional communication structure into a CNC grinding machine for fine grinding, so that the embedded body can be embedded into the upper embedded channel 6 of the groove surface of the upper shell groove, and filling a fiber isolation layer between the embedded body 7 with the hollow three-dimensional communication structure and the upper embedded channel 6; the upper embedded body with the hollow three-dimensional communication structure is provided with an embedded bar block combined with the embedded groove body. The embedding groove channel is provided with damping grooves which are uniformly arranged. The embedded bar block is provided with damping teeth matched with the damping grooves. The fiber isolation layer is made of one of metal fiber, carbon fiber, asbestos fiber and glass fiber. The thickness of the fiber isolation layer is 1-3 mm.
Welding a groove surface cover and finely cutting an upper die cavity 5:
e, welding the cast groove surface cover with the upper shell groove after the step E is finished; after welding, the workpiece is sent to a CNC machine tool to carry out fine cutting and die sinking on the upper die cavity; after the die opening is finished, sending the die into a CNC grinding machine for fine grinding, so that all reference surfaces of the upper die shell and the upper die cavity 5 meet the requirements of drawing setting; and after finishing the fine grinding, feeding the workpiece into a CNC machine tool to finish the opening 9 of the accessory, and obtaining an upper die 10.
Example 2: the present embodiment is described in detail with reference to the fabrication of the upper mold as an implementation, and referring to fig. 1 and 3,
a manufacturing process of a precise plastic mold comprises the following steps:
a, setting an injection mold drawing:
setting a plastic mold by adopting 3D design software, and dividing the mold into an upper mold and a lower mold; the upper die comprises an upper die cavity and an upper die shell, the upper die shell comprises an upper shell groove, the lower die comprises a lower die cavity and a lower die shell, and the lower die shell comprises a lower shell groove; the pore structure, pore size and pore density of the embedded body with the hollow three-dimensional communication structure are set according to the performance of the selected single metal material.
B, forging a lower die shell blank 11 according to the design of the drawing of the step A:
heating low-alloy cold-work die steel, feeding the low-alloy cold-work die steel into a forging machine, forging and quenching for multiple times to obtain a lower die shell blank 11, roughly milling a reference surface after annealing the lower die shell blank 11, and forming a reserved part 12 (a convex part) in the middle of the lower die shell blank 11 into a lower die cavity; the low-alloy cold-work die steel is made of one of 9Mn2V, 9SiCr, 9CrWMl3, CrWMn and Cr2 section steel.
C, finely cutting the lower shell groove 13 according to the design of the drawing of the step A, and machining a lower embedded channel 15:
after rough milling of the reference surface is completed, the reference surface is sent to a CNC (computerized numerical control) machine tool to be finely cut on a lower die shell blank 11 to obtain a plurality of lower shell grooves 13, and mounting columns 14 to be machined, clamping positions to be correspondingly mounted and the like are reserved in advance according to the machining requirements of the lower shell grooves 13 and the connection of a lower die and other components; then, the groove surface of the lower shell groove 13 is finely cut, and a plurality of lower embedded grooves 15 which are uniformly arranged are processed on the groove surface of the lower shell groove;
preparing the lower embedded body 16 with a hollow three-dimensional communication structure:
manufacturing an embedded body with a hollow three-dimensional communication structure below the groove surface of the upper shell groove by using a selective laser melting forming method and using a single metal material; specifically, a 3D printer is adopted, design parameters of an embedded body with a hollow three-dimensional communicating structure are loaded to a control end of the 3D printer, a layer of metal powder is uniformly paved on a substrate by a powder paving roller, laser beams are controlled by a computer to selectively perform laser melting on the current layer, after the melted metal powder is cooled and solidified, a unit height of a processing platform is reduced, a unit height of a powder feeding platform is increased, the powder paving roller paves the metal powder on the processed sheet layer again, the laser beams start to scan a new layer, and the embedded body 16 with the hollow three-dimensional communicating structure is formed by stacking layer upon layer.
E, assembling the lower embedded body 16 with a hollow three-dimensional communication structure with the lower shell groove 13;
feeding the insert 16 with the hollow three-dimensional communicating structure into a CNC grinding machine for fine grinding so that the insert can be embedded into a lower embedding groove channel 15 of the groove surface of the upper shell groove, and filling a fiber isolating layer between the insert 16 with the hollow three-dimensional communicating structure and the lower embedding groove channel 15; the lower hollow three-dimensional communication structure embedded body is provided with an embedded bar combined with the lower embedded groove body. The lower embedding groove channel is provided with damping grooves which are uniformly arranged. The embedded bar block is provided with damping teeth matched with the damping grooves. The fiber isolation layer is made of one of metal fiber, carbon fiber, asbestos fiber and glass fiber. The thickness of the fiber isolation layer is 1-3 mm.
Welding a groove surface cover and finely cutting a lower die cavity:
after the step E is finished, welding the cast lower groove surface cover 17 with the lower groove 13; after welding, sending the workpiece into a CNC machine tool to carry out fine cutting and die sinking on the lower die cavity; after the die opening is finished, sending the die into a CNC grinding machine for fine grinding, so that all reference surfaces of the lower die shell and the lower die cavity meet the requirements of drawing setting; and after finishing fine grinding, feeding the workpiece into a lower opening 20 of a CNC machine tool to finish the part, so as to obtain a lower die 18, wherein 4 mounting columns I21 are arranged at four corners of a lower die cavity in the lower die 18, and 4 lower mounting columns 19 are arranged at four corners of a lower die shell.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (9)
1. A precise plastic mold manufacturing process is characterized by comprising the following steps:
a, setting an injection mold drawing:
setting a plastic mold by adopting 3D design software, and dividing the mold into an upper mold and a lower mold; the upper die comprises an upper die cavity and an upper die shell, the upper die shell comprises an upper shell groove, the lower die comprises a lower die cavity and a lower die shell, and the lower die shell comprises a lower shell groove;
b, forging an upper die shell blank or a lower die shell blank according to the design of the drawing of the step A:
heating low-alloy cold-work die steel, feeding the low-alloy cold-work die steel into a forging machine, forging and quenching for multiple times to obtain an upper die shell blank or a lower die shell blank, and roughly milling a reference surface after annealing the upper die shell blank or the lower die shell blank;
c, finely cutting an upper shell groove or a lower shell groove according to the design of the drawing of the step A, and machining an embedded channel:
after rough milling of the reference surface is completed, the reference surface is sent to a CNC (computer numerical control) machine tool to be finely cut on an upper die shell blank or a lower die shell blank to obtain a plurality of upper shell grooves or a plurality of lower shell grooves; then, the groove surface of the upper shell groove or the groove surface of the lower shell groove is finely cut, and a plurality of embedded grooves which are uniformly arranged are processed on the groove surface of the upper shell groove or the groove surface of the lower shell groove;
d, preparing an embedded body with a hollow three-dimensional communication structure:
manufacturing an embedding body with a hollow three-dimensional communication structure on the groove surface of the upper shell groove or the groove surface of the lower shell groove by using a single metal material by adopting a selective laser melting forming method;
assembling the embedded body with a hollow three-dimensional communication structure with the upper shell groove or the lower shell groove;
feeding the embedded body with the hollow three-dimensional communication structure into a CNC grinding machine for fine grinding, so that the embedded body can be embedded into an embedded channel of the groove surface of the upper shell groove or the groove surface of the lower shell groove, and filling a fiber isolation layer between the embedded body with the hollow three-dimensional communication structure and the embedded channel;
welding a groove surface cover and finely cutting an upper die cavity or a lower die cavity:
e, welding the cast groove surface cover with the upper shell groove or the lower shell groove after the step E is finished; after welding, the workpiece is sent to a CNC machine tool to carry out fine cutting and die sinking on the upper die cavity and the lower die cavity; after the die opening is finished, sending the die into a CNC grinding machine for fine grinding, so that all reference surfaces of the upper die shell and the upper die cavity or the lower die shell and the lower die cavity meet the requirements set by a drawing; and after finishing fine grinding, feeding the workpiece into a CNC machine tool to finish the opening of the accessory.
2. The process for manufacturing a dense plastic mold according to claim 1, wherein in step A), the pore structure, pore size and pore density of the insert having the hollow three-dimensional communicating structure are set according to the properties of the selected single metal material.
3. The process for manufacturing a dense plastic mold according to claim 1, wherein in step B), the low alloy cold work mold steel is made of one of the steels 9Mn2V, 9SiCr, 9CrWMl3, CrWMn, Cr 2.
4. The process of claim 1, wherein the insert channel has uniformly arranged damping grooves.
5. The process for manufacturing a dense plastic mold according to claim 1, wherein in step D), the preparing of the insert having the hollow three-dimensional communicating structure comprises:
the method comprises the steps of loading design parameters of an embedded body with a hollow three-dimensional communicating structure to a control end of a 3D printer, uniformly paving a layer of metal powder on a substrate by using a powder paving roller, controlling laser beams to selectively perform laser melting on the current layer by using a computer, reducing the unit height of a processing platform after the melted metal powder is cooled and solidified, raising the unit height of a powder feeding platform, paving the metal powder on the processed sheet layer by using the powder paving roller, starting scanning a new layer by using the laser beams, and thus forming the embedded body with the hollow three-dimensional communicating structure by stacking layer by layer.
6. The process for manufacturing a dense plastic mold as claimed in claim 1, wherein the insert body with the hollow three-dimensional communicating structure is provided with an insert bar combined with an insert groove body.
7. The process of claim 6, wherein the insert bar has damping teeth matching the damping grooves.
8. The process of claim 1, wherein the fiber isolation layer is made of one of metal fiber, carbon fiber, asbestos fiber, and glass fiber.
9. The process for manufacturing a dense plastic mold according to claim 1 or 8, wherein the thickness of the fiber isolation layer is 1-3 mm.
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| CN202111269169.3A CN113977818A (en) | 2021-10-29 | 2021-10-29 | Manufacturing process of precise plastic mold |
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| CN202111269169.3A CN113977818A (en) | 2021-10-29 | 2021-10-29 | Manufacturing process of precise plastic mold |
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