Process for the production of a shoe mould forming mould
By designing the support layer and fog collection structure in segments, the problems of weight and smoke impact in 3D printed shoe molds were solved, achieving efficient weight reduction and high-quality printing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- QUANZHOU ZHONGZHI KAIJIA LASER TECHNOLOGY CO LTD
- Filing Date
- 2026-04-09
- Publication Date
- 2026-06-19
AI Technical Summary
Existing 3D printed shoe molds are quite heavy, traditional weight-reduction structures have significant limitations, internal supports increase time costs and affect printing results, and smoke affects printing quality.
The support layer and fog collection structure are designed in segments. The support layer is divided into a support base layer and a gradient layer. The gradient layer gradually thickens. The fog collection structure moves with the printing head to remove smoke and avoid affecting the printing process.
It achieves optimal weight reduction, improves printing efficiency and success rate, ensures print quality, reduces weight by 13%, and avoids the impact of smoke on printing.
Smart Images
Figure CN121972686B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of shoe mold manufacturing, and in particular to a manufacturing process for a shoe mold forming die. Background Technology
[0002] 3D shoe mold technology mainly focuses on solving the pain points of traditional processes and integrates 3D printing technologies such as stereolithography (SLA) and stereolithography (SLM) to achieve "de-processing" and "intelligentization" of the manufacturing process. However, the problem that comes with this is that 3D printed shoe molds are relatively heavy. Excessive weight not only increases material costs, but also causes a chain of problems in multiple dimensions such as production operation, equipment life, molding efficiency, mold safety and product precision, such as uneven temperature and difficulty in venting.
[0003] Traditional shoe mold weight reduction structures are mostly honeycomb structures. This structure has certain limitations in weight reduction. It can only be used for weight reduction of shoe molds with curved surfaces in one direction. It cannot be used for weight reduction of complex curved surfaces. Moreover, some mechanical properties will be lost after weight reduction. Therefore, existing technologies have added internal supports to support the suspended surface. However, adding internal supports not only increases the time cost, but also affects the internal structure and increases the risk of printing. In addition, the internal supports cannot be removed.
[0004] Therefore, this case aims to provide a manufacturing process for shoe mold forming molds that can not only ensure optimal weight reduction of the mold while providing stable support and high printing success rate, but also ensure that the printing effect is not affected by smoke when increasing output. Summary of the Invention
[0005] This invention provides a manufacturing process for shoe mold forming dies, which can effectively solve the above-mentioned problems.
[0006] This invention is implemented as follows:
[0007] A process for preparing a shoe mold includes the following steps:
[0008] S1: Obtain the 3D model of the target shoe model, optimize the 3D model, and generate a preliminary 3D model;
[0009] S2: Import the prepared 3D model into the slicing software, set the printing layer thickness and printing angle, perform slicing processing, and generate printing control code containing the scanning path;
[0010] S3: Place the metal material into the printer and form it by stacking it layer by layer based on the printing control code to obtain the shoe mold blank;
[0011] S3 specifically includes:
[0012] S31: A support base layer with uniform lattice wall thickness;
[0013] S32: A gradient layer is formed at the upper end of the supporting base layer, wherein the lattice wall thickness of the gradient layer gradually increases from bottom to top;
[0014] S33: The shoe mold body that forms the shoe mold blank on the gradient layer;
[0015] S4: Remove the shoe mold blank from the printer, and clean and cure it in sequence to obtain a semi-finished shoe mold;
[0016] S5: Grind, polish and sandblast the semi-finished shoe mold to make its surface roughness reach a preset threshold, and obtain the final finished shoe mold.
[0017] As a further improvement, S32 includes:
[0018] S321: After the supporting base layer is formed, the printer head increases the output, and the fog collection structure on the printer moves with the change of the position of the printer head.
[0019] As a further improvement, the height of the gradient layer is 10 mm.
[0020] As a further improvement, the lattice wall thickness at the bottom of the gradient layer is 0.6 mm, and the lattice wall thickness at the top of the gradient layer is 2.5 mm.
[0021] As a further improvement, the lattice wall thickness of the supporting base layer is 0.6 mm.
[0022] As a further improvement, the cell size of the gradient layer is 8mm*8mm*8mm.
[0023] As a further improvement, the cell type of the gradient layer is Gyroid.
[0024] As a further improvement, the printer is also equipped with a fog collection structure inside. The fog collection structure includes a swinging component for rotation and reversal. An adjustment component is provided at the lower end of the swinging component, and a drawer / exhaust component is provided at the bottom end of the adjustment component. The swinging component and the adjustment component are electrically connected to the printer and move with the printer head.
[0025] As a further improvement, the swinging component includes a rotating motor disposed on the inner edge of the printer, a follower plate sleeved on the output end of the rotating motor, a moving pin connected to the bottom of the follower plate, and the moving pin connected to the adjusting component.
[0026] As a further improvement, the adjusting component includes a push rod motor hinged to the inner edge of the printer. The top of the push rod motor is provided with an adjusting groove that cooperates with a moving pin. The lower end of the push rod motor is provided with a longitudinal arrangement seat. The draw-out component is a draw-out tube, which is embedded in the longitudinal arrangement seat.
[0027] The beneficial effects of this invention are:
[0028] This invention eliminates the need for additional support by segmenting the support layer, thus eliminating the need to separately fabricate a support structure during the entire processing step. At the same time, the use of a gradient support layer ensures that the base layer maintains the honeycomb breathability while allowing the gradient layer to provide good support for the outer layer of the shoe mold body. This preserves the integrity and aesthetics of the internal structure, resulting in optimal weight reduction and printing efficiency for the mold. Compared to honeycomb structures, the weight reduction is 13%.
[0029] During the printing of gradient layers, the sudden increase in printing power will generate some printing smoke. Although this smoke will eventually overflow to the top of the device and be extracted, the smoke before it dissipates can easily affect the printing effect. Therefore, this invention uses a smoke collection structure, where the adjusting and swinging components can move with the movement of the printing head. By changing the position of the adjusting and swinging components in real time, the smoke can be extracted immediately when it is generated, thereby avoiding the impact of sudden power increase on printing and ensuring printing quality. Attached Figure Description
[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0031] Figure 1 This is a flowchart illustrating the present invention.
[0032] Figure 2 This is a three-dimensional structural diagram of the printer of the present invention.
[0033] Figure 3 This is the present invention. Figure 2 A top-view structural diagram.
[0034] Figure 4 This is the present invention. Figure 3 Cross-sectional view at point AA.
[0035] Figure 5 This is the present invention. Figure 4 A magnified view of region A in the middle.
[0036] Figure 6 This is a three-dimensional structural diagram of the shoe mold of the present invention.
[0037] Figure 7 This is the present invention. Figure 6 Cross-sectional view (first direction).
[0038] Figure 8 This is the present invention. Figure 6 Cross-sectional view (second direction).
[0039] In the picture:
[0040] The shoe mold body 10, support layer 20, gradient layer 21, support base layer 22, fog collection structure 30, swing component 31, rotating motor 311, follower plate 312, moving pin 313, adjusting component 32, push rod motor 321, adjusting groove 322, longitudinal arrangement seat 323, drawer assembly 33, and printer 40. Detailed Implementation
[0041] All embodiments of the present invention are intended to fall within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0042] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating that the purpose, technical solution, and advantages of the method are clearer. The technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort indicate or imply the relative importance of the indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.
[0043] Reference Figures 1 to 8 As shown, a process for preparing a shoe mold includes the following steps:
[0044] S1: Obtain the 3D model of the target shoe model, optimize the 3D model, and generate a preliminary 3D model;
[0045] S2: Import the prepared 3D model into the slicing software, set the printing layer thickness and printing angle, perform slicing processing, and generate printing control code containing the scanning path;
[0046] S3: The metal material is placed into the printer 40 and formed by stacking layers according to the printing control code to obtain the shoe mold blank.
[0047] S3 specifically includes:
[0048] S31: A support base layer 22 with uniform lattice wall thickness;
[0049] S32: A gradient layer 21 is formed at the upper end of the supporting base layer 22, wherein the lattice wall thickness of the gradient layer 21 gradually increases from bottom to top.
[0050] S33: Shoe mold body 10, which forms a shoe mold blank on a gradient layer;
[0051] S4: Remove the shoe mold blank from the printer 40, and clean and cure it in sequence to obtain a semi-finished shoe mold.
[0052] S5: Grind, polish and sandblast the semi-finished shoe mold to make its surface roughness reach a preset threshold, and obtain the final finished shoe mold.
[0053] Further, S32 includes:
[0054] S321: After the supporting base layer 22 is formed, the printer head of the printer 40 increases the output, and at the same time, the fog collection structure 30 on the printer 40 moves according to the position change of the printer head.
[0055] Furthermore, the height of the gradient layer 21 is 10 mm.
[0056] Furthermore, the lattice wall thickness at the bottom of the gradient layer 21 is 0.6 mm, and the lattice wall thickness at the top of the gradient layer 21 is 2.5 mm.
[0057] Furthermore, the lattice wall thickness of the supporting base layer 22 is 0.6 mm.
[0058] Furthermore, the cell size of the gradient layer 21 is 8mm*8mm*8mm.
[0059] Furthermore, the cell type of the gradient layer 21 is Gyroid.
[0060] This embodiment, by segmenting the support layer 20, not only eliminates the need for additional support, making it unnecessary to separately print the support structure in the entire processing step, but also uses a gradient-changing support layer 20. This allows the support base layer 22 to ensure the honeycomb breathability while the gradient layer 21 provides good support for the outer layer of the shoe mold body 10, preserving the integrity and aesthetics of the internal structure. This results in optimal weight reduction and printing efficiency for the mold, achieving a weight reduction of 13% compared to the honeycomb structure.
[0061] In this embodiment, the printer 40 is a 3D printer. The consumable processing part and the output principle of the printer head of the printer 40 are the same as those of the prior art. The difference is that the printer 40 in this embodiment is also provided with a fog collection structure 30. Specifically, the fog collection structure 30 includes a swing member 31 for rotation and reversal. The lower end of the swing member 31 is provided with a distance adjustment member 32. The bottom end of the distance adjustment member 32 is provided with a suction and discharge member 33. The swing member 31 and the distance adjustment member 32 are both electrically connected to the printer 40 and move with the printer head of the printer 40.
[0062] In this embodiment, during the printing process of the gradient layer 21, a portion of printing smoke is generated due to the sudden increase in printing power. Although this smoke will eventually overflow to the top of the device and be extracted, the smoke before it dissipates can easily affect the printing effect. Therefore, this invention, through the setting of the fog collection structure 30, the adjusting member 32 and the swing member 31 can move with the movement of the printing head. Through the real-time position change of the adjusting member 32 and the swing member 31, the smoke can be extracted immediately when it is generated, thereby avoiding the impact of sudden power increase on printing and ensuring the printing quality.
[0063] Since different shoe models have different lengths, widths, and heights, the movement range of the printing head is also variable. Therefore, the swing member 31 in this embodiment includes a rotating motor 311 disposed on the inner edge of the printer 40. A follower plate 312 is sleeved on the output end of the rotating motor 311. A moving pin 313 is connected to the bottom of the follower plate 312. The moving pin 313 is connected to the adjusting member 32. By connecting the rotating motor 311 to the adjusting member 32 via the follower plate 312, the orientation of the adjusting member 32 can be freely changed, so that the adjusting member 32 can always follow the movement direction of the printing head.
[0064] The rotating motor 311 adjusts the direction, while the adjusting component 32 adjusts the direction. Specifically, the adjusting component 32 includes a push rod motor 321 hinged to the inner edge of the printer 40. The top of the push rod motor 321 is provided with an adjusting groove 322 that cooperates with the moving pin 313. The lower end of the push rod motor 321 is provided with a column of vertical seats 323. The extraction component 33 is an extraction tube, which is embedded in the vertical seats 323. This allows the swing component 31 to cooperate with the adjusting component 32 to reach any point on a plane. Compared to the gradient layer 21 with only a 10mm height change, the fog collection structure 30 no longer needs a height change structure.
[0065] The exhaust component 33 is connected to an external air extraction device, and the exhaust pipe used is a flexible hose, so it is not affected by the positional change of the mist collection structure 30.
[0066] This embodiment uses a variable layer thickness printing method with 0.03mm and 0.06mm layers. The outer patterned surface is printed with a fine layer thickness of 0.03mm for high precision, while the inner surface is printed with a large layer thickness of 0.06mm for fast printing, which improves printing efficiency while ensuring clear patterns.
[0067] The process parameters for a 0.03mm layer thickness are as follows: inner surface contour power P=150w, inner surface contour speed 400mm / s, inner surface contour offset 0.02mm, inner surface fill power 180W, inner surface fill speed 1000mm / s, inner surface fill distance 0.1mm, upper surface contour power 180w, scanning speed 600mm / s, upper surface fill power 180W, and fill scanning speed 1000mm / s.
[0068] The process parameters for a 0.06mm layer thickness are as follows: inner surface filling power P=290w, scanning speed 1100mm / s, scanning spacing 0.09mm, and removal of the upper and lower surfaces and contours.
[0069] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.
Claims
1. A process for the production of a shoe mold forming mold, characterized in that, It includes the following steps: S1: Obtain the 3D model of the target shoe model, optimize the 3D model, and generate a preliminary 3D model; S2: Import the prepared 3D model into the slicing software, set the printing layer thickness and printing angle, perform slicing processing, and generate printing control code containing the scanning path; S3: Place the material into the printer (40), and form it by printing based on the printing control code to obtain the initial mold; S3 specifically includes: S31: A support base layer with uniform lattice wall thickness (22); S32: A gradient layer (21) is formed at the upper end of the supporting base layer (22), wherein the lattice wall thickness of the gradient layer (21) gradually increases from bottom to top; S33: The shoe mold body (10) formed on the gradient layer. S4: Remove the initial mold from the printer (40) and clean and solidify it to obtain a semi-finished shoe mold; S5: Grind, polish and sandblast the semi-finished shoe mold to make its surface roughness reach a preset threshold, and obtain the final product.
2. The manufacturing process of a shoe mold forming die according to claim 1, characterized in that, S32 includes: S321: After the supporting base layer (22) is formed, the printer head (40) increases the output, and the fog collection structure (30) on the printer (40) moves with the change of the position of the printer head.
3. The manufacturing process of a shoe mold forming die according to claim 1, characterized in that, The height of the gradient layer (21) is 10 mm.
4. The manufacturing process of a shoe mold forming die according to claim 1, characterized in that, The lattice wall thickness at the bottom of the gradient layer (21) is 0.6 mm, and the lattice wall thickness at the top of the gradient layer (21) is 2.5 mm.
5. The manufacturing process of a shoe mold forming die according to claim 1, characterized in that, The lattice wall thickness of the supporting base layer (22) is 0.6 mm.
6. The manufacturing process of a shoe mold forming die according to claim 1, characterized in that, The cell size of the gradient layer (21) is 8mm*8mm*8mm.
7. The manufacturing process of a shoe mold forming die according to claim 1, characterized in that, The cell type of the gradient layer (21) is Gyroid.
8. The manufacturing process of a shoe mold forming die according to claim 1, characterized in that, The printer (40) is also provided with a fog collection structure (30), which includes a swing member (31) for rotation and reversal. The lower end of the swing member (31) is provided with an adjustment member (32), and the bottom end of the adjustment member (32) is provided with a drawer (33). The swing member (31) and the adjustment member (32) are both electrically connected to the printer (40) and move with the printer head of the printer (40).
9. The manufacturing process of a shoe mold forming die according to claim 8, characterized in that, The swinging component (31) includes a rotating motor (311) disposed on the inner edge of the printer (40). A follower plate (312) is sleeved on the output end of the rotating motor (311). A moving pin (313) is connected to the bottom of the follower plate (312). The moving pin (313) is connected to the adjusting component (32).
10. The manufacturing process of a shoe mold forming die according to claim 9, characterized in that, The adjusting component (32) includes a push rod motor (321) hinged to the inner edge of the printer (40). The top of the push rod motor (321) is provided with an adjusting groove (322) that cooperates with the moving pin (313). The lower end of the push rod motor (321) is provided with a column seat (323). The drawer component (33) is a drawer tube, which is embedded in the column seat (323).