Process for manufacturing a skin of an integrally formed internal insert structure

Abstract

The application relates to a one-time forming face skin manufacturing process of an internal embedded structure body, and relates to the plastic material forming technical field, in particular to a one-time forming face skin manufacturing process of an internal embedded structure body, which comprises the following steps: step one: preparing a face skin lower die, a face skin upper die and a hoop; according to the characteristics of a target face shape, selecting the face skin lower die, the face skin upper die and various driving devices to be embedded in the face skin; the driving devices comprise support pieces and connecting pieces arranged above the support pieces and used for being connected to various automatic force systems; the face skin upper die is provided with an opening communicating with the upper and lower parts at the position corresponding to each support piece, and is provided with a support frame at the opening; through the combination of the face skin lower die, the face skin upper die and the various driving devices, the flexible adaptation of different face shapes and the one-time wrapping forming of the various driving devices are realized, the mold configuration cost is reduced, the cumulative error of multiple positioning is eliminated, and the uniformity of the face skin wall thickness and the product quality are improved.

Description

Technical Field

[0001] This invention relates to the field of plastic material molding technology, and more particularly to the manufacturing process of the surface layer of a one-time molded internal embedded structure. Background Technology

[0002] The manufacturing of robotic simulated faces typically relies on a casting process. The process involves using an openable upper and lower mold. When closed, the two molds form a cavity that encloses the desired face shape. The mold has a pre-drilled injection port. Liquid silicone molding material is injected into the mold cavity through the injection port. After curing, the mold is opened, and the face with human facial features can be removed.

[0003] However, the molds used in the existing face manufacturing process have fixed cavity shapes after they are made. One set of molds can only form one specific face shape. In the face of the different requirements of different roles for face features, the manufacturer must design and manufacture molds separately for each face shape, which results in high manufacturing and storage costs for molds and significantly insufficient convenience for production switching.

[0004] Furthermore, when it is necessary to embed a driving mechanism inside the face mask to drive changes in facial expressions, existing processes often require multiple castings. Since silicone material is flexible and elastic, it is extremely difficult to position it after multiple moldings. Therefore, positioning deviations inevitably occur after multiple moldings, affecting aesthetics and performance. Summary of the Invention

[0005] The purpose of this invention is to provide a manufacturing process for a one-piece molded internally embedded structure to solve at least one of the above-mentioned technical problems.

[0006] The technical problem solved by this invention can be achieved by the following technical solutions:

[0007] The manufacturing process for the outer skin of a one-piece molded internal embedded structure includes the following steps:

[0008] Step 1: Prepare the lower face mask mold, upper face mask mold, and clamp; select the lower face mask mold, upper face mask mold, and various driving components to be embedded in the face mask according to the characteristics of the target face shape; the driving components include support members and connectors located above the support members for connecting to their respective power systems; the upper face mask mold has openings connecting the upper and lower parts corresponding to the positions of each support member, and a support frame is provided at the opening to fix and support the driving components; assemble each driving component, with the support member located below the upper face mask mold, and the connector inserted upward into the corresponding opening; the support frame supports the lower support member, and an annular edge gap communicating with the opening is left between the edge of the support member and the upper face mask mold, with the edge gap spacing being 1-5mm; the edge gap serves as a seepage outlet, and the seepage outlet surrounds the support member; the clamp has a left-side split and a right-side split, and both the left-side split and the right-side split have a groove below them for engaging the edge of the lower face mask mold;

[0009] Step 2: Join the lower mold, left side assembly, and right side assembly to form an open upper casting cavity; the edge of the upper mold has a flange for fitting against the inner wall of the casting cavity to form an up-and-down sliding structure;

[0010] Step 3: Pour liquid molding material into the casting cavity;

[0011] Step 4: Insert the upper mold of the face sheet into the casting cavity from top to bottom, and slide it down until each driving component is in the casting cavity; continue to press the upper mold of the face sheet down to the mold closing position, and the liquid molding material is squeezed upward through the seepage port and the opening to form a wrapping around the support component;

[0012] Step 5: After the liquid molding material solidifies, the support frame is separated from each driving component, thereby separating each driving component from the upper mold of the surface skin, resulting in a molded surface skin containing the driving components.

[0013] In the above design, firstly, the corresponding lower face mold, upper face mold, and various driving components are selected according to the characteristics of the target face shape. The clamp is a universal locking component that can be reused to adapt to different face shape requirements. There is no need to manufacture a complete set of molds for each face shape, which significantly reduces manufacturing and storage costs. It realizes the modular combination of the lower face mold, upper face mold, and various driving components and the flexible adaptation to face shapes. While simplifying the operation process, it improves the convenience of production switching and the consistency of finished products.

[0014] Secondly, by pre-assembling and fixing each driving component to the upper mold of the face skin, and leaving an annular edge gap between the edge of the support component and the upper mold of the face skin as a seepage port, the liquid molding material is squeezed upward through the seepage port and opening during a single casting, which can completely wrap each support component. This eliminates the multiple casting steps of the traditional process, eliminates the cumulative error caused by multiple positioning in the traditional process, ensures the accuracy of the position of each driving component and the uniformity of the face skin wall thickness, and improves the appearance quality and performance of the finished product.

[0015] In addition, the left and right separate clamps engage with the edge of the under-face mold through slots and lock it in place, making the mold closing operation quick and the locking force evenly distributed along the circumference, reducing the risk of cavity deformation and flash. The upper mold of the face forms an up-and-down sliding fit with the inner wall of the casting cavity through the flange, allowing it to self-adapt to up and down floating during the casting process. When the upper mold of the face is pressed down, excess molding material can overflow from the eyebrow opening, thereby ensuring the uniformity of wall thickness and the stability of molding quality.

[0016] Preferably, step five specifically includes: removing the molding material overflowing from each of the openings, separating the support frame from the driving component, sliding the upper mold of the face skin upward along the inner wall of the casting cavity, separating each of the driving components from the upper mold of the face skin along with the molded face skin, separating the left side split and the right side split, removing the lower mold of the face skin, taking out the face skin containing the driving component, and cleaning the molding material on the connector.

[0017] Preferably, in step one, the driving device includes an eyebrow driving device, which includes two eyebrow support members for embedding in the face skin. The two eyebrow support members are respectively located below two eyebrow positions on the face skin upper mold. An eyebrow connector for connecting to the eyebrow power system is fixed above the eyebrow support member. The face skin upper mold is provided with an eyebrow opening that is vertically connected above the eyebrow connector. An eyebrow support frame for fixing and supporting the eyebrow driving device is provided at the eyebrow opening. An annular edge gap communicating with the eyebrow opening is left between the edge of the eyebrow support member and the face skin upper mold to serve as a seepage port.

[0018] Preferably, in step one, the driving device includes an upper eyelid driving device, which includes two upper eyelid supports for embedding the face skin; the two upper eyelid supports are respectively located below the two upper eyelid positions of the face skin upper mold, and the upper eyelid supports are fixedly connected by upper eyelid connecting rods. An upper eyelid connector for connecting to the upper eyelid power system is fixed above the upper eyelid connecting rods; the face skin upper mold is provided with an upper eyelid opening that communicates vertically above the upper eyelid connectors; an upper eyelid support frame for fixing and supporting the upper eyelid driving device is provided at the upper eyelid opening; an annular edge gap communicating with the upper eyelid opening is left between the edge of the upper eyelid support and the face skin upper mold to serve as an exudate outlet.

[0019] Preferably, in step one, the driving device includes a lower eyelid driving device, which includes two lower eyelid supports for embedding into the face skin; the two lower eyelid supports are respectively located below the two lower eyelid positions of the upper face skin mold, and the lower eyelid supports are fixedly connected by a lower eyelid connecting rod, and a lower eyelid connector for connecting to the lower eyelid power system is fixed above the lower eyelid connecting rod; the upper face skin mold is provided with a lower eyelid opening that communicates vertically above the lower eyelid connector; a lower eyelid support frame for fixing and supporting the lower eyelid driving device is provided at the lower eyelid opening; an annular edge gap communicating with the lower eyelid opening is left between the edge of the lower eyelid support and the upper face skin mold to serve as an exudate outlet.

[0020] Preferably, in step one, the driving device includes an upper lip driving device, which includes an upper lip support for embedding in the face skin. The upper lip support is located below the upper lip position of the face skin upper mold, and an upper lip connector for connecting to the upper lip power system is fixed above the upper lip support. The face skin upper mold has an upper lip opening that communicates vertically above the upper lip connector. An upper lip support frame for fixing and supporting the upper lip driving device is provided at the upper lip opening. An annular edge gap communicating with the upper lip opening is left between the edge of the upper lip support and the face skin upper mold to serve as a seepage port.

[0021] Preferably, in step one, the driving device includes a lower lip driving device, which includes a lower lip support for embedding in the face skin. The lower lip support is located below the lower lip position of the upper face skin mold. A lower lip connector for connecting to the lower lip power system is fixed above the lower lip support. The upper face skin mold has a lower lip opening that communicates vertically above the lower lip connector. A lower lip support frame for fixing and supporting the lower lip driving device is provided at the lower lip opening. An annular edge gap communicating with the lower lip opening is left between the edge of the lower lip support and the upper face skin mold to serve as a seepage port.

[0022] Preferably, in step one, the driving device includes a corner mouth driving device, which includes two corner mouth supports for embedding in the face skin. The two corner mouth supports are respectively located below the two corner mouth positions of the face skin upper mold. A corner mouth connector for connecting to the corner mouth power system is fixed above the corner mouth supports. The face skin upper mold is provided with a corner mouth opening that is vertically connected above the corner mouth connector. A corner mouth support frame for fixing and supporting the corner mouth driving device is provided at the corner mouth opening. An annular edge gap communicating with the corner mouth opening is left between the edge of the corner mouth support and the face skin upper mold to serve as a seepage port.

[0023] Preferably, the upper mold of the dough is made of plastic with a cavity structure and has an upward-opening cavity; nuts are fixed on opposite sides of the cavity, one of which is a positive thread nut and the other is a negative thread nut; a bidirectional threaded rod is also provided, one end of which is threaded into the positive thread nut and the other end is threaded into the negative thread nut.

[0024] Preferably, the upper mold of the dough is made of plastic with a cavity structure and has an upward-opening cavity; there are through holes on the left and right sides of the cavity; a threaded rod is also provided, with one end of the threaded rod passing through one through hole and the other end passing through another through hole; and locking nuts are respectively provided on the outside of the two through holes.

[0025] In summary, by combining the lower mold and upper mold of the face skin with various driving components, and with the help of clamps, flexible adaptation to different face shapes and one-time wrapping and molding of each driving component are achieved, reducing mold configuration costs, eliminating the cumulative error of multiple positioning, and improving the uniformity of face skin wall thickness and the quality of finished products. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the dough mold of the present invention;

[0027] Figure 2 This is a schematic diagram of the exploded decomposition structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the upper mold of the face skin of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the driving device of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the face mask mold of the present invention from a bottom view;

[0031] Figure 6 This is a cross-sectional structural schematic diagram of the upper mold of the face skin according to the present invention;

[0032] Figure 7 This is a schematic diagram illustrating the structure of the bidirectional lead screw with both positive and negative threads according to the present invention;

[0033] Figure 8 This is a schematic diagram illustrating the structure of the through hole in this invention.

[0034] In the diagram: 1. Lower mold of the face skin; 2. Upper mold of the face skin; 3. Hoop; 31. Left side split; 32. Right side split; 4. Slot; 5. Flanged edge; 6. Eyebrow support; 7. Eyebrow connector; 8. Eyebrow opening; 9. Upper eyelid support; 10. Upper eyelid connecting rod; 11. Upper eyelid connector; 12. Upper eyelid opening; 13. Lower eyelid support; 14. Lower eyelid connecting rod; 15. Lower eyelid connector; 16. Upper lip support; 17. Upper lip connector; 18. Upper lip opening; 19. Lower lip support; 20. Lower lip connector; 21. Lower lip opening; 22. Corner of the mouth support; 23. Corner of the mouth connector; 24. Corner of the mouth opening; 25. Bidirectional threaded rod; 26. Threaded rod; 27. Through hole. Detailed Implementation

[0035] To make the technical means, creative features, objectives and effects of the invention easier to understand, the invention will be further explained below with reference to specific illustrations.

[0036] refer to Figures 1-6 The manufacturing process of the faceplate with a one-piece internal embedded structure includes the following steps:

[0037] Step 1: Prepare the lower face mold 1, upper face mold 2, and clamp 3; select the lower face mold 1, upper face mold 2, and various driving components to be embedded in the face according to the characteristics of the target face shape; the driving components include support components and connectors located above the support components for connecting to their respective power systems; the upper face mold 2 has openings connecting the upper and lower parts corresponding to the positions of each support component, and a support frame is provided at the opening to fix and support the driving components; assemble each driving component, with the support component located below the upper face mold 2, and the connector inserted upward into the corresponding opening; the support frame supports the support component below, and an annular edge gap communicating with the opening is left between the edge of the support component and the upper face mold 2, with the edge gap spacing being 1-5mm; the edge gap serves as a seepage outlet, and the seepage outlet surrounds the support component; the clamp 3 has a left split 31 and a right split 32, and both the left split 31 and the right split 32 have a groove 4 below it for engaging the edge of the lower face mold 1;

[0038] Step 2: Join the lower mold 1, left side part 31 and right side part 32 to form an open upper casting cavity; the edge of the upper mold 2 has a flange 5, which is used to fit against the inner wall of the casting cavity to form an up-and-down sliding structure.

[0039] Step 3: Pour liquid molding material into the casting cavity;

[0040] Step 4: Insert the upper mold 2 of the face sheet into the casting cavity from top to bottom, and slide it down until each driving component is in the casting cavity; continue to press the upper mold 2 of the face sheet down to the mold closing position, and the liquid molding material is squeezed upward through the seepage port and the opening to form a wrapping around the support component;

[0041] Step 5: After the liquid molding material solidifies, the support frame is separated from each driving component, thereby separating each driving component from the upper mold 2 of the surface skin, resulting in a molded surface skin containing the driving components.

[0042] In the above design, firstly, the corresponding lower face mold 1, upper face mold 2, and various driving components are selected according to the characteristics of the target face shape. The clamp 3 is a universal locking component that can be reused to adapt to different face shape requirements. There is no need to manufacture a complete set of molds for each face shape, which significantly reduces manufacturing and storage costs. It realizes the modular combination of the lower face mold 1, upper face mold 2, and various driving components and the flexible adaptation to face shapes. While simplifying the operation process, it improves the convenience of production switching and the consistency of finished products.

[0043] Secondly, by pre-assembling and fixing each driving component to the upper mold 2 of the surface, and leaving an annular edge gap between the edge of the support component and the upper mold 2 of the surface as a seepage port, the liquid molding material is squeezed upward through the seepage port and the opening during a single casting, which can completely wrap each support component. This eliminates the multiple casting steps of the traditional process and eliminates the cumulative error caused by multiple positioning in the traditional process. It ensures the accuracy of the position of each driving component and the uniformity of the surface wall thickness. After the surface is formed, the support frame is separated from the driving component first through the step-by-step demolding method in step five, and then the driving component is smoothly separated from the upper mold of the surface. This allows each driving component to be completely removed along with the formed surface, ensuring that the embedded position of the driving component in the surface is not disturbed by demolding. This achieves one-time integral molding of the built-in driving component and the simulated surface, further improving the appearance quality and performance of the finished product.

[0044] In addition, the left and right separate clamps 3 are engaged with the edge of the lower mold 1 of the face skin through the slots 4 and are locked in place. The mold closing operation is quick and the locking force is evenly distributed along the circumference, which reduces the risk of cavity deformation and flash. The upper mold 2 of the face skin forms an up-and-down sliding fit with the inner wall of the casting cavity through the flange 5, which allows it to self-adapt to up and down floating during the casting process. When the upper mold 2 of the face skin is pressed down, excess molding material can overflow from the eyebrow opening, thereby ensuring the uniformity of wall thickness and the stability of molding quality.

[0045] The liquid molding material uses silicone, which, after curing, has the properties of flexibility and elasticity, allowing the molded face to conform to the robot's facial movements.

[0046] Step 5 specifically includes: removing the overflowing molding material from each opening, separating the support frame from the driving components, sliding the upper mold 2 of the face skin upward along the inner wall of the casting cavity, separating each driving component from the upper mold 2 of the face skin along with the molded face skin, separating the left split 31 and the right split 32, removing the lower mold 1 of the face skin, removing the face skin with the built-in driving components, and cleaning the molding material on the connector.

[0047] Through the demolding and cleaning process in step five, after the liquid molding material has solidified, the overflowing molding material at the opening is removed first, so that the support frame and the drive component can be separated smoothly, avoiding the obstruction of demolding by the overflow residue. The upper mold 2 of the surface skin slides upward along the inner wall of the pouring cavity, and the sliding cooperation between the flange 5 and the inner wall achieves smooth demolding, reducing the pulling and damage to the molded surface skin. After the left and right split clamps 3 are separated, the lower mold 1 of the surface skin can be easily removed. The surface skin containing the drive component is removed as a whole in one go. The demolding efficiency is high and the drive component is not damaged. Finally, the residual molding material on the connectors is cleaned to ensure that the plug ends of each connector are clean, which facilitates the rapid and accurate docking with their respective power systems in the future.

[0048] In step one, the driving device includes an eyebrow driving device, which includes two eyebrow support members 6 for embedding in the face skin. The two eyebrow support members 6 are respectively located below two eyebrow positions on the upper mold 2 of the face skin. An eyebrow connector 7 for connecting to the eyebrow power system is fixed above the eyebrow support member 6. An eyebrow opening 8 that is vertically connected is provided above the eyebrow connector 7 on the upper mold 2 of the face skin. An eyebrow support frame for fixing and supporting the eyebrow driving device is provided at the eyebrow opening 8. An annular edge gap communicating with the eyebrow opening 8 is left between the edge of the eyebrow support member 6 and the upper mold 2 of the face skin to serve as a seepage port.

[0049] Two eyebrow support components 6 are respectively positioned below the two eyebrow positions on the upper mold 2 of the face skin, so that the left and right eyebrow driving components can be pre-positioned precisely in the predetermined position within the cavity. The eyebrow support components 6 are inserted upward into the eyebrow opening 8 through the eyebrow connector 7 and fixed and supported by the eyebrow support frame to ensure that the eyebrow support components 6 do not shift during the casting process. The annular edge gap left between the edge of the eyebrow support component 6 and the upper mold 2 of the face skin serves as a seepage port, which is evenly distributed around the support component. During a single casting, the liquid molding material is evenly wrapped around the upper surface and edge of the eyebrow support component 6 through the annular gap, while excess material and gas are discharged. A simulated face skin containing eyebrow driving components and with uniform wall thickness is obtained in one molding process, with symmetrical and complete wrapping of the left and right eyebrows.

[0050] In step one, the driving device includes an upper eyelid driving device, which includes two upper eyelid supports 9 for embedding in the face skin. The two upper eyelid supports 9 are located below the two upper eyelid positions of the face skin upper mold 2, and the upper eyelid supports 9 are fixedly connected by an upper eyelid connecting rod 10. An upper eyelid connector 11 for connecting to the upper eyelid power system is fixed above the upper eyelid connecting rod 10. The face skin upper mold 2 is provided with an upper eyelid opening 12 that is vertically connected above the upper eyelid connector 11. An upper eyelid support frame for fixing and supporting the upper eyelid driving device is provided at the upper eyelid opening 12. An annular edge gap communicating with the upper eyelid opening 12 is left between the edge of the upper eyelid support 9 and the face skin upper mold 2 to serve as an exudation port.

[0051] Two upper eyelid support pieces 9 are fixedly connected by upper eyelid connecting rods 10, realizing an integrated linkage structure of the left and right upper eyelids. This ensures that the relative position of the left and right upper eyelids is accurate and their movement is synchronized after casting. The upper eyelid support piece 9 is inserted upward into the upper eyelid opening 12 through the upper eyelid connector 11 and is fixedly supported by the upper eyelid support frame. This allows the upper eyelid driving mechanism to be precisely positioned in the upper eyelid position in the cavity before casting. The annular edge gap between the edge of the upper eyelid support piece 9 and the upper mold 2 of the face skin serves as a seepage port. During a single casting, the liquid molding material evenly wraps the upper eyelid support piece 9 through the annular gap. A simulated face skin with a uniform wall thickness containing the upper eyelid driving mechanism is obtained in one molding process. After molding, the upper eyelid connector 11 can be directly connected to the upper eyelid power system to realize the dynamic expression driving of the upper eyelid.

[0052] In step one, the driving device includes a lower eyelid driving device, which includes two lower eyelid supports 13 for embedding in the face skin. The two lower eyelid supports 13 are located below the two lower eyelid positions of the upper face skin mold 2, and the lower eyelid supports 13 are fixedly connected by a lower eyelid connecting rod 14. A lower eyelid connector 15 for connecting to the lower eyelid power system is fixed above the lower eyelid connecting rod 14. The upper face skin mold 2 is provided with a lower eyelid opening that is vertically connected above the lower eyelid connector 15. A lower eyelid support frame for fixing and supporting the lower eyelid driving device is provided at the lower eyelid opening. An annular edge gap communicating with the lower eyelid opening is left between the edge of the lower eyelid support 13 and the upper face skin mold 2 to serve as an exudate outlet.

[0053] Two lower eyelid support components 13 are fixedly connected by a lower eyelid connecting rod 14, realizing an integrated linkage structure of the left and right lower eyelids. This ensures that the relative position of the left and right lower eyelids is accurate and their movement is synchronized after casting. The lower eyelid support component 13 is inserted upward into the lower eyelid opening through the lower eyelid connector 15 and is fixedly supported by the lower eyelid support frame. This allows the lower eyelid driving mechanism to be precisely positioned in the lower eyelid position within the cavity before casting. The annular edge gap between the edge of the lower eyelid support component 13 and the upper mold 2 of the face skin serves as a seepage port. During a single casting, the liquid molding material evenly wraps the lower eyelid support component 13 through this annular gap. A simulated face skin containing the lower eyelid driving mechanism and with uniform wall thickness is obtained in one molding process. After molding, the lower eyelid connector 15 can be directly connected to the lower eyelid power system to realize dynamic expression driving of the lower eyelid.

[0054] In step one, the driving device includes an upper lip driving device, which includes an upper lip support 16 for embedding in the face skin. The upper lip support 16 is located below the upper lip position of the face skin upper mold 2. An upper lip connector 17 for connecting to the upper lip power system is fixed above the upper lip support 16. The face skin upper mold 2 is provided with an upper lip opening 18 that is connected vertically above the upper lip connector 17. An upper lip support frame for fixing and supporting the upper lip driving device is provided at the upper lip opening 18. An annular edge gap communicating with the upper lip opening 18 is left between the edge of the upper lip support 16 and the face skin upper mold 2 to serve as a seepage port.

[0055] The upper lip support 16 is located below the upper lip position of the upper mold 2 of the face skin, realizing the precise positioning of the upper lip driving mechanism in the cavity. The upper lip support 16 is inserted upward into the upper lip opening 18 through the upper lip connector 17 and fixed and supported by the upper lip support frame to ensure that the upper lip support 16 does not shift during the casting process. The annular edge gap left between the edge of the upper lip support 16 and the upper mold 2 of the face skin serves as a seepage port, which is evenly distributed around the support. During a single casting, the liquid molding material is evenly wrapped around the upper surface and edge of the upper lip support 16 through the annular gap, while excess material and gas are discharged. A simulated face skin containing the upper lip driving mechanism and with uniform wall thickness is obtained in one molding. After molding, the upper lip connector 17 is exposed on the surface of the face skin and can be directly connected to the upper lip power system to realize the dynamic expression driving of the upper lip.

[0056] In step one, the driving device includes a lower lip driving device, which includes a lower lip support 19 for embedding in the face skin. The lower lip support 19 is located below the lower lip position of the upper face skin mold 2. A lower lip connector 20 for connecting to the lower lip power system is fixed above the lower lip support 19. The upper face skin mold 2 is provided with a lower lip opening 21 that is connected vertically above the lower lip connector 20. A lower lip support frame for fixing and supporting the lower lip driving device is provided at the lower lip opening 21. An annular edge gap communicating with the lower lip opening 21 is left between the edge of the lower lip support 19 and the upper face skin mold 2 to serve as a seepage port.

[0057] The lower lip support 19 is located below the lower lip position of the upper mold 2 of the face skin, realizing the precise positioning of the lower lip driving mechanism in the cavity. The lower lip support 19 is inserted upward into the lower lip opening 21 through the lower lip connector 20 and fixedly supported by the lower lip support frame to ensure that the lower lip support 19 does not shift during the casting process. The annular edge gap left between the edge of the lower lip support 19 and the upper mold 2 of the face skin serves as a seepage port, which is evenly distributed around the support. During a single casting, the liquid molding material is evenly wrapped around the upper surface and edge of the lower lip support 19 through the annular gap, while excess material and gas are discharged. A simulated face skin with a lower lip driving mechanism and uniform wall thickness is obtained in one molding. After molding, the lower lip connector 20 is exposed on the face skin surface and can be directly connected to the lower lip power system to realize the dynamic expression driving of the lower lip.

[0058] In step one, the driving device includes a corner mouth driving device, which includes two corner mouth supports 22 for embedding in the face skin. The two corner mouth supports 22 are respectively located below the two corner mouth positions of the face skin upper mold 2. A corner mouth connector 23 for connecting to the corner mouth power system is fixed above the corner mouth supports 22. A corner mouth opening 24 with vertical communication is provided above the corner mouth connector 23 of the face skin upper mold 2. A corner mouth support frame for fixing and supporting the corner mouth driving device is provided at the corner mouth opening 24. An annular edge gap communicating with the corner mouth opening 24 is left between the edge of the corner mouth support 22 and the face skin upper mold 2 to serve as a seepage port.

[0059] Two mouth corner supports 22 are located below the two mouth corner positions on the upper mold 2 of the face skin, respectively, realizing the independent and precise positioning of the left and right mouth corner driving components in the cavity. Each mouth corner support 22 is inserted upward into the mouth corner opening 24 through the mouth corner connector 23 and fixed and supported by the mouth corner support frame to ensure that the mouth corner support 22 does not shift during the casting process. The annular edge gap left between the edge of the mouth corner support 22 and the upper mold 2 of the face skin serves as a liquid seepage port, which is evenly distributed around each support. During a single casting, the liquid molding material is evenly wrapped around the upper surface and edge of the mouth corner support 22 through the annular gap, while excess material and gas are discharged. A simulated face skin with mouth corner driving components and uniform wall thickness is obtained in one molding. After molding, the mouth corner connector 23 is exposed on the face skin surface and can be directly connected to the mouth corner power system to realize dynamic expression driving of the mouth corner.

[0060] Prepare the clamp 3. Based on the characteristics of the target face shape, select the corresponding lower face mold 1, upper face mold 2, and various driving components to be embedded in the face. The driving components include eyebrow driving components, upper eyelid driving components, lower eyelid driving components, upper lip driving components, lower lip driving components, and corner mouth driving components. Assemble the selected driving components into the corresponding positions on the upper face mold 2.

[0061] Insert the edge of the lower mold 1 into the slot 4 below the left and right parts 31 and 32 of the clamp 3, close and lock the left and right parts 31 and 32 of the clamp 3 with the lower mold 1 to form an open casting cavity, and inject liquid molding material into the casting cavity.

[0062] The upper mold 2 of the face skin, which is equipped with each driving component, is inserted into the casting cavity from top to bottom. The flange 5 of the edge of the upper mold 2 of the face skin fits against the inner wall of the casting cavity to form a sliding fit. The upper mold 2 of the face skin slides down along the inner wall until each driving component is in the casting cavity. The upper mold 2 of the face skin is pressed down to the mold closing position. The liquid molding material is squeezed upward through each annular seepage port and opening to form a complete wrapping of each support component.

[0063] After the liquid molding material has solidified, remove the overflowing molding material from each opening to separate each support frame from the corresponding drive component. Slide the upper mold 2 of the face skin upward along the inner wall of the casting cavity to separate the left split 31 and the right split 32. Remove the lower mold 1 of the face skin and take out the robot face skin containing each drive component. Clean the residual molding material on each connector to obtain a one-time molded simulated face skin with built-in drive components.

[0064] Example 1

[0065] refer to Figure 7 This is the first embodiment of the present invention.

[0066] The upper mold 2 of the dough is made of plastic with a cavity structure and has an upward-opening cavity. Nuts are fixed on the left and right sides of the cavity, one of which is a positive thread nut and the other is a negative thread nut. A positive and negative threaded double screw 25 is also provided. One end of the positive and negative threaded double screw 25 is threaded into the positive thread nut and the other end is threaded into the negative thread nut.

[0067] By cooperating with the bidirectional lead screw 25 (both positive and negative threads), positive thread nut, and negative thread nut, rotating the bidirectional lead screw 25 can simultaneously tighten the left and right sides of the upper mold 2 of the dough inward or open outward, thereby adjusting the width of the face shape of the dough, enhancing the mold's adaptability to different face shapes, and improving the mold's versatility and molding accuracy.

[0068] After the selected driving components are assembled in their corresponding positions on the upper mold 2 of the face skin, rotate the bidirectional lead screw 25 with positive and negative threads. Through the cooperation of the positive thread nut and the negative thread nut, drive the left and right sides of the upper mold 2 of the face skin to tighten inward or open outward simultaneously, so as to adjust the cavity width of the upper mold 2 of the face skin and make the face skin width match the target face shape.

[0069] Example 2

[0070] refer to Figure 8 This is the second embodiment of the present invention.

[0071] The upper mold 2 of the dough is made of plastic with a cavity structure and has an upward-opening cavity; there are through holes 27 on the left and right sides of the cavity; a threaded rod 26 is also provided, one end of the threaded rod 26 passes through one through hole 27 and the other end passes through another through hole 27; a locking nut is provided on the outside of the two through holes 27 respectively.

[0072] By adjusting the position of the locking nut, the distance between the left and right sides of the upper mold 2 of the dough can be adjusted, thereby adjusting the width of the face shape and enhancing the mold's adaptability to different face shapes.

[0073] After the selected driving components are assembled in their corresponding positions on the upper mold 2 of the face skin, adjust the locking position of each locking nut on the threaded rod 26 to adjust the distance between the left and right sides of the upper mold 2 of the face skin so that the width of the face skin matches the target face shape, and then tighten the locking nuts to fix it.

[0074] The foregoing has shown and described the basic principles, main features, and advantages of the invention. Those skilled in the art should understand that the invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made without departing from the spirit and scope of the invention, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection of the invention is defined by the appended claims and their equivalents.

Claims

1. A manufacturing process for a one-piece molded internal embedded structure for the outer skin, characterized by: Includes the following steps: Step 1: Prepare the lower dough mold (1), upper dough mold (2), and clamp (3); Based on the characteristics of the target face shape, select the lower face mold (1), the upper face mold (2), and prepare to embed the various driving components in the face skin; The drive device includes a support member and a connector disposed above the support member for connecting to a respective power system; The upper mold (2) of the face sheet is provided with openings that connect the upper and lower parts corresponding to the positions of each support member, and a support frame is provided at the opening to fix and support the driving device; Assemble each driving component, with the support component located below the upper mold (2) of the face skin, and the connector inserted upward into the corresponding opening; The support frame supports the support member below, and an annular edge gap communicating with the opening is left between the edge of the support member and the upper mold (2) of the face skin. The spacing of the edge gap is 1 to 5 mm. The edge gap is used as a seepage outlet, and the seepage outlet surrounds the support member; The clamp (3) has a left split (31) and a right split (32), and both the left split (31) and the right split (32) are provided with a slot (4) for engaging the edge of the face skin mold (1) below. Step 2: Join the lower mold (1), the left side part (31) and the right side part (32) together to form an open casting cavity at the top; The edge of the upper mold (2) of the dough has a flange (5) for fitting against the inner wall of the casting cavity to form an up-and-down sliding structure; Step 3: Pour liquid molding material into the casting cavity; Step 4: Insert the upper mold (2) of the dough into the casting cavity from top to bottom, and slide it down until each driving component is in the casting cavity; Continue pressing down the upper mold (2) of the face sheet to the mold closing position, and the liquid molding material is squeezed upward through the seepage port and the opening to form a wrapping of the support; Step 5: After the liquid molding material is solidified, the support frame is separated from each driving component, thereby separating each driving component from the upper mold (2) of the surface skin, and obtaining a molded surface skin with the driving component inside.

2. The manufacturing process of the one-piece molded internal embedded structure skin according to claim 1, characterized in that: Step 5 specifically includes: removing the overflowing molding material from each of the openings, separating the support frame from the driving component, sliding the upper mold (2) of the face skin upward along the inner wall of the casting cavity, separating each driving component from the upper mold (2) along with the molded face skin, separating the left side split (31) and the right side split (32), removing the lower mold (1) of the face skin, taking out the face skin containing the driving component, and cleaning the molding material on the connector.

3. The manufacturing process for the one-piece molded internal embedded structure of the face skin according to claim 1, characterized in that: In step one, the driving device includes an eyebrow driving device, which includes two eyebrow support members (6) for embedding into the face skin. The two eyebrow support members (6) are located below the two eyebrow positions of the face skin upper mold (2). An eyebrow connector (7) for connecting to the eyebrow power system is fixed above the eyebrow support member (6). The upper mold of the face mask (2) is provided with an eyebrow opening (8) that is connected vertically above the eyebrow connector (7). An eyebrow support frame for fixing and supporting the eyebrow driving device is provided at the eyebrow opening (8); An annular edge gap is left between the edge of the eyebrow support (6) and the upper mold of the face skin (2), which communicates with the eyebrow opening (8) as a seepage outlet.

4. The manufacturing process of the one-piece molded internal embedded structure skin according to claim 1, characterized in that: In step one, the driving device includes an upper eyelid driving device, which includes two upper eyelid supports (9) for embedding the face skin. The two upper eyelid support members (9) are located below the two upper eyelid positions of the upper eyelid mold (2). The upper eyelid support members (9) are fixedly connected by the upper eyelid connecting rod (10). An upper eyelid connector (11) for connecting to the upper eyelid power system is fixed above the upper eyelid connecting rod (10). The upper eyelid mold (2) is provided with an upper eyelid opening (12) that is connected vertically above the upper eyelid connector (11). An upper eyelid support frame for fixing and supporting the upper eyelid driving device is provided at the upper eyelid opening (12); An annular edge gap is left between the edge of the upper eyelid support (9) and the upper eyelid mold (2) to communicate with the upper eyelid opening (12) as a seepage outlet.

5. The manufacturing process for the one-piece molded internal embedded structure of the face skin according to claim 1, characterized in that: In step one, the driving device includes a lower eyelid driving device, which includes two lower eyelid supports (13) for embedding into the facial skin. The two lower eyelid support members (13) are respectively located below the two lower eyelid positions of the upper eyelid mold (2). The lower eyelid support members (13) are fixedly connected by the lower eyelid connecting rod (14). A lower eyelid connector (15) for connecting to the lower eyelid power system is fixed above the lower eyelid connecting rod (14). The upper eyelid mold (2) is provided with an upper and lower eyelid opening above the lower eyelid connector (15); The lower eyelid opening is provided with a lower eyelid support frame for fixing and supporting the lower eyelid driving device; An annular edge gap is left between the edge of the lower eyelid support (13) and the upper face mold (2) to communicate with the lower eyelid opening, serving as a seepage outlet.

6. The manufacturing process for the one-piece molded internal embedded structure of the face skin according to claim 1, characterized in that: In step one, the driving device includes an upper lip driving device, which includes an upper lip support (16) for embedding the face skin. The upper lip support (16) is located below the upper lip position of the face skin upper mold (2), and an upper lip connector (17) for connecting to the upper lip power system is fixed above the upper lip support (16). The upper mold (2) of the dough is provided with an upper lip opening (18) that is connected vertically above the upper lip connector (17). An upper lip support frame for fixing and supporting the upper lip driving device is provided at the upper lip opening (18); An annular edge gap is left between the edge of the upper lip support (16) and the upper mold (2) of the face skin, which communicates with the upper lip opening (18) as a seepage outlet.

7. The manufacturing process for the outer skin of the one-piece molded internal embedded structure according to claim 1, characterized in that: In step one, the driving device includes a lower lip driving device, which includes a lower lip support (19) for embedding into the face skin. The lower lip support (19) is located below the lower lip position of the face skin upper mold (2), and a lower lip connector (20) for connecting to the lower lip power system is fixed above the lower lip support (19). The upper mold of the dough (2) is provided with a lower lip opening (21) that is connected vertically above the lower lip connector (20). The lower lip opening (21) is provided with a lower lip support frame for fixing and supporting the lower lip driving device; The edge of the lower lip support (19) and the upper mold of the face skin (2) have an annular edge gap that communicates with the lower lip opening (21) to serve as a seepage outlet.

8. The manufacturing process for the outer skin of the one-piece molded internal embedded structure according to claim 1, characterized in that: In step one, the driving device includes a corner mouth driving device, which includes two corner mouth supports (22) for embedding into the face skin. The two corner mouth supports (22) are located below the two corner mouth positions of the face skin upper mold (2). A corner mouth connector (23) for connecting to the corner mouth power system is fixed above the corner mouth support (22). The upper mold of the dough (2) is provided with a mouth corner opening (24) that is connected vertically above the mouth corner connector (23). A corner support frame for fixing and supporting the corner driving device is provided at the corner opening (24); The edge of the corner support (22) and the upper mold of the face skin have an annular edge gap that communicates with the corner opening (24) to serve as a seepage outlet.

9. The manufacturing process for the one-piece molded internal embedded structure of the face skin according to claim 1, characterized in that: The upper mold (2) of the dough is made of plastic with a cavity structure and has an upward-opening cavity; Nuts are fixed to the left and right sides of the cavity, one of which is a positive thread nut and the other is a negative thread nut; A bidirectional lead screw (25) with both positive and negative threads is also provided. One end of the bidirectional lead screw (25) is threaded into the positive thread nut, and the other end is threaded into the negative thread nut.

10. The manufacturing process for the outer skin of the one-piece molded internal embedded structure according to claim 1, characterized in that: The upper mold (2) of the dough is made of plastic with a cavity structure and has an upward-opening cavity; The cavity has through holes (27) on its left and right sides; A threaded rod (26) is also provided, one end of which passes through a through hole (27) and the other end passes through another through hole (27); Locking nuts are provided on the outside of the two through holes (27).

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