Mold core assembly and mold

Abstract

The utility model relates to the technical field of molds, in particular to a mold core assembly and a mold. The mold core assembly comprises a mounting piece and a mold core main body, the mounting piece is provided with a mounting hole and a limiting groove which are communicated, and a notch of the limiting groove faces the center of the mounting hole. The mold core main body is made of a light-transmitting material, the mold core main body is mounted in the mounting hole, and a part of the structure of the mold core main body is matched with the limiting groove. According to the mold, the light-transmitting piece is adopted in the mold core body, so that external light can penetrate through the mold core body to irradiate the forming material, the material is cured and formed, and the mold is used for manufacturing the optical element in a light curing forming mode. And meanwhile, the mold core main body is limited through the limiting groove of the mounting piece, and the mold core main body is uniformly fixed in the center of the mounting piece. On the basis of the structure of a traditional optical mold core, the high-precision positioning mold core assembly is provided by combining the light transmission requirement of the light-transmitting mold core, and injection molding of an optical-grade element in a light curing injection molding mode is achieved.

Description

Technical Field

[0001] The present application relates to the field of mold technology, and in particular to a mold core assembly and a mold. Background Art

[0002] Existing optical lens molding is mostly prepared by glass molding or thermoplastic optical injection molding. Because it works in a high temperature and high pressure environment and requires materials with high hardness and high thermal conductivity, the mold core materials used are tungsten carbide, mold steel nickel-phosphorus plating, etc., which are difficult to process. Taking the most commonly used mold steel nickel-phosphorus plating mold core as an example, the processing process requires precision turning, drilling, heat treatment, nickel-phosphorus film plating, single-point diamond turning and other steps. The equipment used is expensive, the working hours are long, and each mold core needs to be processed separately, so the mold core is expensive.

[0003] Light-curing injection molding technology is different from thermoplastic optical injection molding. It uses ultraviolet light for curing instead of curing by cooling. The raw materials used are liquid at room temperature, so the molding process can be completed at room temperature and pressure, which can reduce the hardness and thermal conductivity requirements of the mold core.

[0004] At present, light-curing injection technology is mostly used for the molding of materials such as liquid silicone, and is used in scenes such as silicone buttons, structural parts, and seals. The precision requirements are relatively low, and the related molds cannot meet the optical-grade precision requirements. Conventional optical-grade molds are made of metal, which cannot transmit ultraviolet light and cannot be directly used in the light-curing injection molding process. Utility Model Content

[0005] The present application provides a mold core assembly and a mold, which aims to provide a mold core assembly with high-precision positioning based on the structure of a traditional optical mold core and the light transmission requirement of a light-transmitting mold core, so as to realize the injection molding of optical-grade components by photocuring injection molding.

[0006] In a first aspect, the present application provides a mold core assembly, the mold core assembly comprising:

[0007] A mold core seat, wherein the mold core seat is provided with a first light-through hole;

[0008] A mold core sleeve, the mold core sleeve is installed on the mold core seat, the mold core sleeve is provided with a mounting hole, and the mounting hole is connected to the first light-transmitting hole;

[0009] The mold core body is made of a light-transmitting material and is installed in the installation hole.

[0010] In the present application, by setting the mold body as a light-transmitting part and setting a first light hole in the mold seat, external light can pass through the mold body through the first light hole to illuminate the molding material, so that the material can be solidified and molded, thereby realizing the mold using light-curing molding to produce optical elements.

[0011] In a possible design, the mold core seat cooperates with the mold core sleeve to form a limiting groove, the notch of the limiting groove faces the center of the mounting hole, and a partial structure of the mold core body cooperates with the limiting groove.

[0012] In the present application, the limiting groove carries, limits and presses the mold body to ensure that the mold body is in the correct position during operation.

[0013] Among them, the limiting groove can be set as an annular structure to press and limit the mold core body from all sides of the mold core body, further limit the position and posture of the mold core body, and improve the accuracy and stability of mold processing.

[0014] In a possible design, the side wall of the mounting hole is provided with a first limiting portion protruding inwardly, and the outer side wall of the mold core body is provided with an outwardly protruding abutted portion, and along the thickness direction of the mold core assembly, the abutted portion abuts against the first limiting portion.

[0015] In the present application, a first limiting portion is provided on the mold core sleeve to limit the mold core body from being separated from the mounting hole.

[0016] In a possible design, the mold core seat is provided with an abutment portion, and the abutment portion can extend into the mounting hole to abut against the abutted portion;

[0017] Along the thickness direction of the mold core assembly, there is a gap between the abutting portion and the first limiting portion to form the limiting groove, and the abutted portion cooperates with the limiting groove.

[0018] In the present application, by setting an abutment portion on the mold core seat, the abutment portion can apply pressure to the mold core body to limit the position of the mold core body in the mounting hole, thereby ensuring the stability of workpiece molding. At the same time, through the cooperation between the abutment portion and the first limiting portion, the mold core body is clamped in the limiting groove formed by the abutment portion and the first limiting portion, and the mold core body is positioned with high precision. In addition, the abutment portion and the first limiting portion are subjected to mechanical stress to prevent the mold core body from being deformed by force.

[0019] In a possible design, the mold core sleeve and the mold core seat are detachably connected.

[0020] In the present application, the mold seat and the mold sleeve are configured as two detachably connected parts, which facilitates the processing of the two parts separately. At the same time, when the mold body is worn, it is also convenient to disassemble the mold seat and the mold sleeve and replace the mold body.

[0021] In a possible design, the outer side wall of the abutment portion is provided with an external thread, the side wall of the mounting hole is provided with an internal thread, and the mold seat and the mold sleeve are threadedly connected.

[0022] In the present application, by providing a threaded connection between the mold core seat and the mold core sleeve, there is no need to provide other connecting parts, the structure is simple, disassembly and assembly are convenient, and cost is saved.

[0023] In a possible design, the material of the mold core body is polydimethylsiloxane.

[0024] In this application, the material of the mold core body can be selected from a light-transmitting mold glue with good ultraviolet transmittance and a polymer component, such as polydimethylsiloxane. Compared with light-transmitting mold glues made of other materials, the light-transmitting mold glue of this application uses polydimethylsiloxane, which can reduce the curing temperature of the light-transmitting mold glue from more than 100 degrees to 70 degrees, reduce the deformation of the light-transmitting mold glue due to thermal expansion and contraction, and reduce the risk of deformation of the mold core body after molding.

[0025] When polydimethylsiloxane is used as the light-transmitting mold glue, the process of making the mold core component can be as follows: after the polydimethylsiloxane main agent and the polydimethylsiloxane hardener are evenly mixed at a mass ratio of 10:1, the mixed liquid is poured into the molding cavity composed of the mold core seat, the mold core sleeve and the mold turning mold, the mixed liquid is vacuumed and defoamed, and then placed in a 70°C oven for more than 4 hours to cure the polydimethylsiloxane. After the polydimethylsiloxane is completely cured, the mold core component is pulled out from the mold turning mold to complete the production of the mold core component.

[0026] The purpose of degassing the polydimethylsiloxane diluent and the polydimethylsiloxane curing agent before injecting them is to avoid bubbles in the molded mold body, which affects the accuracy of the mold body and ensures the accuracy of the mold body surface.

[0027] Compared with traditional optical molds that use difficult-to-process metal materials and must be processed separately, the present embodiment only requires processing of one mold body sample, which can then be replicated in large quantities at low cost based on the mold body sample, greatly reducing the cost of making optical molds, thereby reducing the cost of making optical components.

[0028] In a possible design, the mold body is made of glass.

[0029] In the present application, the material of the mold body can also be glass with better hardness to improve the molding accuracy of the mold body and increase the service life of the mold body.

[0030] When the mold body is made of light-transmitting glass, the process of making the mold assembly is to first use a glass molding method to make the mold body, then install the edge-grinded mold body into a mold sleeve, and finally assemble the mold base and the mold sleeve.

[0031] Among them, in order to ensure that the mold body and the mold sleeve fit closely, the size of the mold body can be appropriately enlarged when making the mold body, and the mold body can be ground and tested when it is installed into the mold sleeve to match the size of the mold body with the size of the installation hole to avoid gaps between the mold body and the mold sleeve due to dimensional errors, which affects the molding quality of the workpiece.

[0032] In this embodiment, when the mold body is made of light-transmitting glass, the mold body can be mass-produced at low cost by adopting a glass molding method, which greatly reduces the cost of manufacturing optical components.

[0033] The present application further provides a mold corresponding to the mold core assembly provided in the first aspect, wherein the mold comprises:

[0034] Upper mold assembly;

[0035] A mold core assembly, wherein the mold core assembly is the mold core assembly described above, and the mold core assembly is installed on the upper mold assembly.

[0036] In a possible design, the upper mold assembly includes a first mold plate and a second mold plate connected to each other;

[0037] The mold core seat is installed on the first template, and the first template is provided with a second light-through hole connected with the first light-through hole;

[0038] The second template is provided with a limiting hole, the mold core seat and the mold core sleeve are arranged in the limiting hole, and part of the mold core body can extend out of the limiting hole.

[0039] In the present application, the first template and the second template are detachably connected by bolts and other connectors to facilitate maintenance and transportation of the two separately. The mold core seat is fixed to the lower end surface of the first template by bolts, and the mold core seat and the mold core sleeve are arranged in the limiting hole, and the molding part of the mold core body protrudes from the limiting hole for cooperation with the cavity. The present application limits the axial position of the mold core assembly by fixing the mold core assembly on the first template, and limits the horizontal position of the mold core assembly by the limiting hole, so as to achieve high-precision positioning of the mold core assembly, thereby enabling the mold core assembly to produce high-precision optical components.

[0040] A second aspect of the present application provides a mold core assembly, the mold core assembly comprising:

[0041] A mounting seat, wherein the mounting seat is provided with a mounting hole;

[0042] A mold core pressing ring, the mold core pressing ring is installed in the installation hole;

[0043] The mold core body is made of a light-transmitting material, and the mold core body is installed in the installation hole. Along the thickness direction of the mold core assembly, the mold core pressure ring abuts against the mold core body.

[0044] In the present application, by providing the mold body with a light-transmitting part, providing a mounting hole on the mounting seat, and providing the mold pressure ring as a ring structure, external light can pass through the mold body through the mounting hole and the mold pressure ring to irradiate the molding material, so that the material can be solidified and formed, thereby realizing the mold using light-curing molding to produce optical elements.

[0045] In a possible design, the mounting seat cooperates with the mold core pressure ring to form a limiting groove, the notch of the limiting groove faces the center of the mounting hole, and a partial structure of the mold core body cooperates with the limiting groove.

[0046] In the present application, the limiting groove carries, limits and presses the mold body to ensure that the mold body is in the correct position during operation.

[0047] Among them, the limiting groove can be set as an annular structure to press and limit the mold core body from all sides of the mold core body, further limit the position and posture of the mold core body, and improve the accuracy and stability of mold processing.

[0048] In a possible design, the side wall of the mounting hole is provided with a first limiting portion protruding inwardly, and the outer side wall of the mold core body is provided with an abutted portion protruding outwardly, and along the thickness direction of the mold core assembly, the abutted portion abuts against the first limiting portion;

[0049] Along the thickness direction of the mold core assembly, the mold core pressure ring is located above the first limiting portion, and there is a gap between the two to form the limiting groove, and the abutted portion cooperates with the limiting groove.

[0050] In the present application, a first limiting portion is provided on the mounting seat to limit the mold core body from being separated from the mounting hole. The mold core pressure ring is brought into contact with the mold core body to apply pressure to the mold core body to limit the position of the mold core body in the mounting hole, thereby ensuring the stability of workpiece molding. At the same time, through the cooperation between the mold core pressure ring and the first limiting portion, the mold core body is clamped in the limiting groove formed by the mold core body and the first limiting portion, and the mold core body is positioned with high precision. And the mold core body and the first limiting portion are subjected to mechanical stress to prevent the mold core body from being deformed by force.

[0051] In a possible design, the mold core pressure ring is detachably connected to the mounting seat.

[0052] In the present application, the mounting seat and the mold core pressing piece are arranged as two detachably connected parts, so as to facilitate the processing of the two parts separately. At the same time, when the mold core body is worn, it is also convenient to remove the mold core pressing ring and the mounting seat and replace the mold core body.

[0053] In a possible design, the outer side wall of the mold core pressure ring is provided with an external thread, the inner side wall of the mounting hole is provided with an internal thread, and the mold core pressure ring is threadedly connected to the mounting seat.

[0054] In the present application, by providing a mounting seat and a threaded connection with the mold core pressing ring, there is no need to provide other connecting parts, the structure is simple, the assembly and disassembly is convenient, and the cost is saved.

[0055] In a possible design, a side wall of the mounting hole is provided with a second limiting portion protruding inwardly;

[0056] Along the thickness direction of the mold core assembly, the second limiting portion is located between the internal thread and the first limiting portion, and is used to limit the position of the mold core pressure ring, and the width of the second limiting portion is smaller than the ring width of the mold core pressure ring.

[0057] In the present application, along the thickness direction of the mold core assembly, the second limiting portion is located between the internal thread and the first limiting portion, which can limit the position of the mold core pressing ring in the installation hole, prevent the mold core pressing ring from being connected too deeply, occupying the mold core main body forming or installation position, and weakening the structural strength of the mold core main body. Among them, the width of the second limiting portion is smaller than the ring width of the mold core pressing ring, even if the mold core pressing ring and the second limiting portion are in abutment state, the mold core pressing ring can still press the mold core main body.

[0058] In a possible design, the material of the mold core body is polydimethylsiloxane.

[0059] In this application, the material of the mold core body can be selected from a light-transmitting mold glue with good ultraviolet transmittance and a polymer component, such as polydimethylsiloxane. Compared with light-transmitting mold glues made of other materials, the light-transmitting mold glue of this application uses polydimethylsiloxane, which can reduce the curing temperature of the light-transmitting mold glue from more than 100 degrees to 70 degrees, reduce the deformation of the light-transmitting mold glue due to thermal expansion and contraction, and reduce the risk of deformation of the mold core body after molding.

[0060] When polydimethylsiloxane is used as the light-transmitting mold adhesive, the process of making the mold core component can be as follows: after the polydimethylsiloxane main agent and the polydimethylsiloxane hardener are evenly mixed at a mass ratio of 10:1, the mixed liquid is poured into the molding cavity composed of the mounting seat, the mold core pressure ring and the mold turning mold, the mixed liquid is vacuumed and defoamed, and then placed in a 70°C oven for more than 4 hours to cure the polydimethylsiloxane. After the polydimethylsiloxane is completely cured, the mold core component is pulled out from the mold turning mold to complete the production of the mold core component.

[0061] The purpose of degassing the polydimethylsiloxane diluent and the polydimethylsiloxane curing agent before injecting them is to avoid bubbles in the molded mold body, which affects the accuracy of the mold body and ensures the accuracy of the mold body surface.

[0062] Compared with traditional optical molds that use difficult-to-process metal materials and must be processed separately, the present embodiment only requires processing of one mold body sample, which can then be replicated in large quantities at low cost based on the mold body sample, greatly reducing the cost of manufacturing optical components.

[0063] In a possible design, the mold body is made of glass.

[0064] In the present application, the material of the mold body can also be glass with better hardness to improve the molding accuracy of the mold body and increase the service life of the mold body.

[0065] When the mold body is made of light-transmitting glass, the process of making the mold assembly is to first use a glass molding method to make the mold body, then install the edge-grinded mold body into a mounting seat, and finally assemble the mounting seat and the mold pressure ring.

[0066] Among them, in order to ensure that the mold body and the mold sleeve fit closely, the size of the mold body can be appropriately enlarged when making the mold body, and the mold body can be ground and tested when it is installed into the mold sleeve to match the size of the mold body with the size of the installation hole to avoid gaps between the mold body and the mold sleeve due to dimensional errors, which affects the molding quality of the workpiece.

[0067] In this embodiment, when the mold body is made of light-transmitting glass, the mold body can be mass-produced at low cost by adopting a glass molding method, which greatly reduces the cost of manufacturing optical components.

[0068] The present application further provides a mold according to a mold core assembly provided in the second aspect, wherein the mold comprises:

[0069] Upper mold assembly;

[0070] A mold core assembly, wherein the mold core assembly is the mold core assembly described above, and the mold core assembly is installed on the upper mold assembly.

[0071] In a possible design, the upper mold assembly includes a first mold plate and a second mold plate connected to each other;

[0072] The mounting seat is mounted on the first template, and the first template is provided with a second light-through hole connected with the mounting hole;

[0073] The second template is provided with a limiting hole, the mounting seat is arranged in the limiting hole, and part of the mold core body can extend out of the limiting hole.

[0074] In the present application, the first template and the second template are detachably connected by bolts and other connectors to facilitate maintenance and transportation of the two separately. The upper end face of the mounting seat is fixed to the lower end face of the first template by bolts, and the mounting seat is arranged in the limiting hole, and the molding part of the mold body protrudes from the limiting hole for cooperation with the cavity. The present application limits the axial position of the mold assembly by fixing the mold assembly on the first template, and limits the horizontal position of the mold assembly by the limiting hole, thereby realizing high-precision positioning of the mold assembly, so that the mold assembly can produce high-precision optical components. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] Figure 1 A schematic cross-sectional view of the mold provided in this application;

[0076] Figure 2 A schematic cross-sectional view of a mold core assembly provided in the present application in a specific embodiment;

[0077] Figure 3 This is a cross-sectional schematic diagram of the mold core seat and the mold core sleeve provided in this application after being matched;

[0078] Figure 4 A schematic cross-sectional view of the mold base provided in this application;

[0079] Figure 5 A schematic cross-sectional view of the mold core sleeve provided in this application;

[0080] Figure 6 A schematic cross-sectional view of the mold body provided in this application;

[0081] Figure 7 This is a cross-sectional schematic diagram of the mold provided in this application;

[0082] Figure 8 It is a cross-sectional schematic diagram of the mold core seat and the mold core sleeve provided in the present application being assembled and installed in the mold turning mold;

[0083] Fig. 9 A cross-sectional schematic diagram of a mold core assembly produced by using a mold turning mold provided in this application;

[0084] Fig.10 This is a cross-sectional schematic diagram of a mold core assembly provided in the present application when the mold core body is made of glass;

[0085] Fig.11 A cross-sectional schematic diagram of the second template provided in this application;

[0086] Fig.12 A cross-sectional schematic diagram of a mold core assembly provided in the present application in another specific embodiment;

[0087] Fig.13 This is a cross-sectional schematic diagram of the mold core pressure ring and the mounting seat provided in this application after being matched;

[0088] Fig.14 A cross-sectional schematic diagram of the mounting base provided in this application;

[0089] Fig.15 This is a cross-sectional schematic diagram of the mounting seat and the mold core pressure ring provided in the present application being assembled and installed in the mold turning mold;

[0090] Fig.16 A cross-sectional schematic diagram of a mold core assembly produced by using a mold turning mold provided in this application;

[0091] Fig.17 This is a cross-sectional schematic diagram of a mold core assembly provided in the present application when the mold core body is made of glass;

[0092] Fig.18 To adopt Fig.12 Schematic diagram of the mold cross section of the mold core assembly shown.

[0093] Reference numerals:

[0094] 1-mold, 2-upper mold assembly, 21-first template, 211-second light-through hole, 22-second template, 221-limiting hole, 221a-first hole, 211b-second hole, 3-mold core assembly, 31-mold core seat, 311-first light-through hole, 312-limiting groove, 313-seat body, 314-abutment portion, 32-mold core sleeve, 321-mounting hole, 322-sleeve body, 323-first limiting portion, 33-mold core body, 331-molding portion, 332-abutted portion, 34-mounting seat, 341-second limiting portion, 35-mold core pressure ring;

[0095] 4- mold turning mold, 41- receiving groove, 411- recessed portion;

[0096] Z-thickness direction. DETAILED DESCRIPTION

[0097] At present, molds for making optical components are mostly made of all-metal or difficult-to-process materials, which have high processing costs and cannot be reproduced at low cost. In addition, molds have no light-transmitting parts, so optical components cannot be directly molded by light-curing injection molding.

[0098] To this end, this embodiment provides a mold to solve the above technical problems. The mold can be used to make any parts based on photocuring injection molding, especially high-precision optical-grade components (such as lenses and prisms). Optical components made using this mold can be used in all scenarios that require optical devices, such as optical communications, mobile phone lenses, laser radars, etc.

[0099] like Figure 1The figure shows a cross-sectional schematic diagram of a mold 1. The mold 1 includes an upper mold assembly 2, a mold core assembly 3 and a lower mold assembly (not shown in the figure). The mold core assembly 3 is mounted on the upper mold assembly 2, and a cavity (not shown in the figure) is provided on the side of the lower mold assembly close to the upper mold assembly 2. When the upper mold assembly 2 and the lower mold assembly are molded together, an injection molding space is formed between the mold core assembly 3 and the cavity, and the formed injection molding space is the shape of the workpiece. Among them, the molding surface of the cavity is the outer surface of the workpiece, and the molding surface of the mold core assembly 3 is the inner surface of the workpiece.

[0100] like Figure 2 The figure shows a cross-sectional schematic diagram of a mold core assembly 3 in an embodiment. The mold core assembly 3 includes a mounting part and a mold core body 33. The mounting part includes a mold core seat 31 and a mold core sleeve 32. The mold core seat 31 is mounted on the upper mold assembly 2, and the mold core sleeve 32 is mounted on the mold core seat 31. The mold core sleeve 32 is provided with a mounting hole 321, and the mold core body 33 is installed in the mounting hole 321. Among them, the mold core body 33 is made of a light-transmitting material, and the mold core seat 31 is provided with a first light-through hole 311. The first light-through hole 311 is connected with the mounting hole 321, so that external light (ultraviolet rays) can pass through the first light-through hole 311 and the mold core body 33 to irradiate the material in the cavity to solidify the material to form a workpiece. In this embodiment, the mold body 33 is set as a light-transmitting member, and a first light hole 311 is set on the mold seat 31, so that external light can pass through the mold body 33 through the first light hole 311 to irradiate the material in the cavity, so that the material is solidified and formed, thereby realizing that the mold 1 uses light-curing molding to produce optical elements.

[0101] The mold core body 33 is provided with a molding part 331, which protrudes from the mounting hole 321, and an injection molding space is formed between the molding part 331 and the mold cavity. In addition, along the thickness direction Z of the mold 1, the projection of the first light hole 311 can cover the projection of the molding part 331, so that the injection molding space formed by the molding part 331 and the mold cavity can be completely illuminated by light.

[0102] Furthermore, if Figure 3 The figure shows a cross-sectional view of the mold core seat 31 and the mold core sleeve 32 after they are matched. After the mold core seat 31 and the mold core sleeve 32 are matched, a limiting groove 312 is formed. The notch of the limiting groove 312 is arranged toward the center of the mounting hole 321. Part of the structure of the mold core body 33 is clamped in the limiting groove 312 (how the partial structure of the mold core body 33 and the limiting groove 312 are clamped will be described in detail below). In this embodiment, the mold core body 33 is supported, limited and pressed by the limiting groove 312 to ensure that the mold core body 33 is in the correct position during operation.

[0103] Among them, the limiting groove 312 can be set as an annular structure to press and limit the mold core body 33 from all sides of the mold core body 33, further limit the position and posture of the mold core body 33, and improve the processing accuracy and stability of the mold 1.

[0104] like Figure 4 The figure shows a cross-sectional schematic diagram of the mold core seat 31. The mold core seat 31 is provided with a seat body 313 and an abutment portion 314. Along the thickness direction Z of the mold 1, the abutment portion 314 is connected to the bottom of the seat body 313. The outer diameter of the abutment portion 314 is smaller than the outer diameter of the seat body 313. The first light hole 311 passes through the seat body 313 and the abutment portion 314.

[0105] like Figure 5 The figure shows a cross-sectional schematic diagram of the mold sleeve 32. The mold sleeve 32 is provided with a sleeve body 322 and a first limiting portion 323. The mounting hole 321 is set through the sleeve body 322. The first limiting portion 323 is a structure protruding along the side wall of the mounting hole 321 toward the center line of the mounting hole 321.

[0106] like Figure 6 The figure is a schematic cross-sectional view of the mold core body 33 , and the outer side wall of the mold core body 33 is provided with an abutment portion 332 protruding toward the outer periphery.

[0107] Please refer to Figures 2 to 6 When the mold core assembly 3 is in the assembled state, the abutting portion 314 extends into the mounting hole 321 and fits tightly with the side wall of the mounting hole 321, and the sleeve body 322 abuts against the seat body 313. Along the thickness direction Z of the mold 1, the abutting portion 314 abuts against the upper end surface of the abutted portion 332, and the lower end surface of the abutted portion 332 abuts against the first limiting portion 323. There is a gap between the first limiting portion 323 and the abutting portion 314, so that a limiting groove 312 is formed between the first limiting portion 323 and the abutting portion 314, and the abutted portion 332 is clamped in the limiting groove 312. In this embodiment, the first limiting portion 323 is provided on the mold sleeve 32 to limit the mold body 33 from being separated from the mounting hole 321, and the abutting portion 314 is provided on the mold seat 31 so that the abutting portion 314 can apply pressure to the mold body 33 to limit the position of the mold body 33 in the mounting hole 321, thereby ensuring the stability of the workpiece molding. At the same time, through the cooperation between the abutting portion 314 and the first limiting portion 323, the mold body 33 is clamped in the limiting groove 312 formed between the abutting portion 314 and the first limiting portion 323, so as to achieve high-precision positioning of the mold body 33. In addition, the abutting portion 314 and the first limiting portion 323 are subjected to mechanical stress to prevent the mold body 33 from being deformed by force.

[0108] In some embodiments, the mold core sleeve 32 is detachably connected to the mold core seat 31. In this embodiment, the mold core seat 31 and the mold core sleeve 32 are configured as two detachably connected parts, which is convenient for processing the two separately. At the same time, when the mold core body 33 is worn, it is also convenient to disassemble the mold core seat 31 and the mold core sleeve 32 to replace the mold core body 33.

[0109] Specifically, the outer wall of the abutment portion 314 is provided with an external thread, and the inner wall of the sleeve body 322 is provided with an internal thread. The abutment portion 314 and the sleeve body 322 are threadedly connected to achieve a detachable connection between the mold core seat 31 and the mold core sleeve 32. In this embodiment, the mold core seat 31 and the mold core sleeve 32 are threadedly connected, and no other connecting parts are required. The structure is simple, the assembly and disassembly is convenient, and the cost is saved.

[0110] Alternatively, the mold core sleeve 32 and the mold core seat 31 may be fixedly connected by a connecting member such as bolts.

[0111] In some embodiments, the mold base 31 and the mold sleeve 32 can be made of metal, and the mold body 33 can be made of a light-transmitting mold glue with a high molecular component and good ultraviolet transmittance.

[0112] When the mold core body 33 is made of transparent mold glue, the transparent mold glue can be made by pouring glue and pouring mold, which is easy to operate. Figure 7 FIG. 4 is a schematic cross-sectional view of the mold turning mold 4, wherein the mold turning mold 4 is provided with a receiving groove 41, and the bottom wall of the receiving groove 41 is provided with a recessed portion 411 having the same profile shape as the molding portion 331. Figure 8 and Fig. 9 The figure shows a cross-sectional schematic diagram of the manufacturing process of the mold core component 3. Figures 7 to 9 The manufacturing process is as follows: first, assemble the mold core seat 31 and the mold core sleeve 32, and then install the mold core seat 31 and the mold core sleeve 32 in the receiving groove 41 of the mold-turning mold 4, so that the first light hole 311 of the mold core seat 31, the mounting hole 321 of the mold core sleeve 32, the limit groove 312 formed by the mold core seat 31 and the mold core sleeve 32, and the recessed portion 411 of the mold-turning mold 4 form a molding cavity, and finally inject the light-transmitting mold glue into the molding cavity through the first light hole 311 and the mounting hole 321, and solidify the light-transmitting mold glue. After the light-transmitting mold glue is solidified, the mold core body 33 formed by the light-transmitting mold glue fits tightly with the mold core seat 31 and the mold core sleeve 32, and the mold core assembly 3 is taken out from the mold-turning mold 4 to complete the manufacturing of the mold core assembly 3.

[0113] Please continue to refer to Figures 2 to 6 There is a certain interval between the first limiting portion 323 and the abutting portion 314, so that an annular limiting groove 312 is formed between the first limiting portion 323 and the abutting portion 314. When the mold body 33 uses translucent mold glue, in the process of making the mold body 33, the limiting groove 312 forms an annular glue pulling groove structure, which can evenly fix the translucent mold glue at the center of the mold sleeve 32, so that the translucent mold glue is evenly stressed during the thermal expansion and contraction process, thereby preventing the translucent mold glue from being irregularly deformed due to thermal expansion and contraction.

[0114] Compared with traditional optical molds that use difficult-to-process metal materials and must be processed separately, the present embodiment only requires processing of one mold body 33 sample, which can then be replicated in large quantities at low cost based on the mold body 33 sample, greatly reducing the cost of manufacturing optical components.

[0115] In some embodiments, the material of the light-transmitting mold glue can be polydimethylsiloxane. Compared with the light-transmitting mold glue using other materials, the light-transmitting mold glue in this embodiment uses polydimethylsiloxane, which can reduce the curing temperature of the light-transmitting mold glue from more than 100 degrees to 70 degrees, reduce the deformation of the light-transmitting mold glue due to thermal expansion and contraction, and reduce the risk of deformation of the mold core body 33 after molding.

[0116] When polydimethylsiloxane is used as the light-transmitting mold glue, the process of making the mold core component 3 can be as follows: after the polydimethylsiloxane main agent and the polydimethylsiloxane hardener are evenly mixed at a mass ratio of 10:1, the mixed liquid is poured into the molding cavity composed of the mold core seat 31, the mold core sleeve 32 and the mold turning mold 4, the mixed liquid is vacuumed and defoamed, and then placed in a 70° C. oven for more than 4 hours to cure the polydimethylsiloxane. After the polydimethylsiloxane is completely cured, the mold core component 3 is pulled out from the mold turning mold 4 to complete the production of the mold core component 3.

[0117] The purpose of degassing the mixture of the polydimethylsiloxane main agent and the polydimethylsiloxane hardener is to avoid bubbles in the mold body 33 to affect the precision of the mold body 33 and ensure the precision of the mold surface of the mold body 33.

[0118] In some embodiments, the light-transmitting mold glue can also be made of other organic materials that are transparent to ultraviolet light, such as TPX (polytetramethylpentene) various optical resins: PMMA (polymethyl methacrylate), PS (polystyrene), PC (polycarbonate), COP&COC (cyclic olefin copolymers also known as cyclic olefin polymers), O-PET (polyethylene terephthalate), etc., which are not specifically limited in this embodiment.

[0119] In some embodiments, the mold body 33 may be made of transparent glass. Fig.10 The figure shows a cross-sectional view of the mold assembly 3 when the mold body 33 is made of glass. The mold assembly 3 includes a mold seat 31, a mold sleeve 32 and a mold body 33. The mold body 33 is made of glass, and the mold seat 31 and the mold sleeve 32 can be made of metal.

[0120] When the mold body 33 is made of translucent glass, the process of making the mold assembly 3 is to first use a glass molding method to make the mold body 33, then install the edge-grinded mold body 33 into the mold sleeve 32, and finally assemble the mold seat 31 and the mold sleeve 32.

[0121] Among them, in order to ensure that the mold body 33 is closely matched with the mold sleeve 32 and the mold seat 31, when making the mold body 33, the size of the mold body 33 can be appropriately enlarged, and the mold body 33 can be ground and tested when it is installed in the mold sleeve 32, so that the size of the mold body 33 matches the size of the mounting hole 321, avoiding the gap between the mold body 33 and the mold sleeve 32 due to dimensional error, which affects the molding quality of the workpiece.

[0122] In this embodiment, when the mold body 33 is made of light-transmitting glass, the mold body 33 can be mass-produced at low cost by using the glass molding method, which greatly reduces the cost of manufacturing optical components. In addition, the use of light-transmitting glass with higher hardness in this embodiment can improve the molding accuracy of the mold body 33 and extend the service life of the mold body 33.

[0123] It should be noted that the glass molding method adopts an existing process method, which will not be elaborated in detail in this embodiment.

[0124] Please continue to refer to Figure 1 , corresponding to the use of Figure 2 In the mold 1 of the mold core assembly 3 shown, the upper mold assembly 2 includes a first template 21 and a second template 22. Along the thickness direction Z of the mold 1, the first template 21 is located above the second template 22. The first template 21 and the second template 22 are detachably connected by bolts and other connecting parts to facilitate maintenance and transportation of the two. Among them, the first template 21 is provided with a second light-through hole 211 connected to the first light-through hole 311, and the second template 22 is provided with a limiting hole 221. The mold core seat 31 is fixed to the lower end surface of the first template 21 by bolts, and the mold core seat 31 and the mold core sleeve 32 are arranged in the limiting hole 221, and the molding portion 331 of the mold core body 33 protrudes from the limiting hole 221 for matching with the cavity.

[0125] Specifically, Fig.11 The figure shows a cross-sectional schematic diagram of the limiting hole 221 in the second template 22. The limiting hole 221 includes a first hole 221a and a second hole 221b that are connected. The diameter of the first hole 221a is larger than the diameter of the second hole 221b. Figure 1 and Fig.11 Part of the structure of the mold core seat 31 is closely matched with the first hole 221a, and the mold core sleeve 32 is closely matched with the second hole 221b, so that the limiting hole 211 limits the mold core seat 31 and the mold core sleeve 32 at the same time.

[0126] This embodiment limits the axial position of the mold core assembly 3 by fixing the mold core assembly 3 on the first template 21, and limits the horizontal position of the mold core assembly 3 by the limiting hole 221, thereby achieving high-precision positioning of the mold core assembly 3, so that the mold core assembly 3 can produce high-precision optical components.

[0127] like Fig.12 The figure shows a cross-sectional schematic diagram of a mold core assembly 3 in another embodiment. The mold core assembly 3 includes a mounting member and a mold core body 33. The mounting member includes a mounting seat 34 and a mold core pressing ring 35. The mounting seat 34 is provided with a mounting hole 321 penetrating along its thickness direction Z. The mold core pressing ring 35 and the mold core body 33 are installed in the mounting hole 321, and along the thickness direction Z of the mold core assembly 3, the mold core bodies 33 are abutted against each other. Among them, the mold core body 33 is made of a light-transmitting material, and the mold core body 33 is provided with a first light-through hole 311 penetrating along its thickness direction Z. The first light-through hole 311 is connected with the mounting hole 321, so that external light (ultraviolet rays) can pass through the mounting hole 321, the first light-through hole 311, and the mold core body 33 to irradiate the material in the cavity to solidify the material to form a workpiece. In this embodiment, by configuring the mold body 33 as a light-transmitting member, configuring a mounting hole 321 on the mounting seat 34, and configuring a first light-through hole 311 on the mold body 33, external light can pass through the mold body 33 through the mounting hole 321 and the first light-through hole 311 to illuminate the material in the cavity, so that the material is solidified and formed, thereby realizing that the mold 1 uses a light-curing method to produce optical elements.

[0128] The mold core body 33 is provided with a molding part 331, which protrudes from the mounting hole 321, and an injection molding space is formed between the molding part 331 and the mold cavity. In addition, along the thickness direction Z of the mold 1, the projection of the first light hole 311 can cover the projection of the molding part 331, so that the injection molding space formed by the molding part 331 and the mold cavity can be completely illuminated by light.

[0129] Furthermore, if Fig.13 The figure shows a cross-sectional view of the mold body 33 after being matched with the mounting seat 34. After the mold body 33 and the mounting seat 34 are matched, a limiting groove 312 is formed. The notch of the limiting groove 312 is arranged toward the center of the mounting hole 321. Part of the structure of the mold body 33 is clamped in the limiting groove 312 (the following will specifically describe how the partial structure of the mold body 33 and the limiting groove 312 are clamped). In this embodiment, the mold body 33 is supported, limited and pressed by the limiting groove 312 to ensure that the mold body 33 is in the correct position during operation.

[0130] Among them, the limiting groove 312 can be set as an annular structure to press and limit the mold core body 33 from all sides of the mold core body 33, further limit the position and posture of the mold core body 33, and improve the processing accuracy and stability of the mold 1.

[0131] like Fig.14The figure shows a cross-sectional view of the mounting seat 34, which is provided with a mounting hole 321, a first limiting portion 323 protruding inwardly from the side wall of the mounting hole 321, and a second limiting portion 341 protruding inwardly from the side wall of the mounting hole 321 (the second limiting portion 341 is described in detail below).

[0132] The structure of the mold body 33 and Figure 6 The structure of the mold body 33 shown is the same as that of the mold body 33 shown in FIG. Figure 6 , Figure 12 to Figure 14 When the mold core assembly 3 is in the assembled state, along the thickness direction Z of the mold core assembly 3, the mold core body 33 abuts against the upper end surface of the abutted portion 332, and the lower end surface of the abutted portion 332 abuts against the first limiting portion 323. The mold core pressure ring 35 is located above the first limiting portion 323, and there is a gap between the two to form a limiting groove 312, and the abutted portion 332 is clamped in the limiting groove 312. In this embodiment, the first limiting portion 323 is set on the mounting seat 34 to limit the mold core body 33 from being separated from the mounting hole 321, and the mold core pressure ring 35 is installed in the mounting hole 321, so that the mold core pressure ring 35 can apply pressure to the mold core body 33 to limit the position of the mold core body 33 in the mounting hole 321, thereby ensuring the stability of the workpiece molding. At the same time, through the cooperation between the mold core pressing ring 35 and the first limiting portion 323, the mold core body 33 is clamped in the limiting groove 312 formed by the mold core pressing ring 35 and the first limiting portion 323, so as to achieve high-precision positioning of the mold core body 33. In addition, the mold core pressing ring 35 and the first limiting portion 323 bear mechanical stress to prevent the mold core body 33 from being deformed by force.

[0133] In this embodiment, the mounting seat 34 is set as an integrated structure, which can meet the requirements of the overall structure of the mold core pressure ring 35 being installed in the mounting seat 34, and the mold core body 33 is abutted and limited by the cooperation of the mounting seat 34 and the mold core pressure ring 35. Compared with setting the mounting seat 34 as a split structure, the mounting seat 34 of the split structure is prevented from vibrating and loosening during the use of the mold core assembly 3, the overall height of the mold core assembly 3 is maintained, the impact on the mold core body 33 is reduced, and the stability of the mold core body 33 is ensured.

[0134] In some embodiments, the mold core pressing ring 35 is detachably connected to the mounting seat 34. In this embodiment, the mold core pressing ring 35 and the mounting seat 34 are configured as two detachably connected parts, so that when the mold core body 33 is worn, the mold core pressing ring 35 and the mounting seat 34 can be removed to replace the mold core body 33.

[0135] Specifically, the outer wall of the mold core pressing ring 35 is provided with an external thread, the inner wall of the mounting hole 321 is provided with an internal thread, and the mold core pressing ring 35 is threadedly connected to the mounting seat 34 to achieve a detachable connection between the mold core pressing ring 35 and the mounting seat 34. In this embodiment, by threading the mold core pressing ring 35 and the mounting seat 34, no other connecting parts are required, the structure is simple, the disassembly and assembly are convenient, and the cost is saved.

[0136] More specifically, along the thickness direction Z of the mold core assembly 3, the second limiting portion 341 is located between the internal thread and the first limiting portion 323, which can limit the position of the mold core pressing ring 35 in the mounting hole 321, and prevent the mold core pressing ring 35 from being connected too deeply, occupying the forming or mounting position of the mold core body 33, and weakening the structural strength of the mold core body 33. Among them, the width of the second limiting portion 341 is smaller than the ring width of the mold core pressing ring 35, and even when the mold core pressing ring 35 and the second limiting portion 341 are in abutment, the mold core pressing ring 35 can still press the mold core body 33.

[0137] It should be noted that the mold core pressing ring 35 is an annular structure, and its ring width is the radius of the entire ring of the mold core pressing ring 35 minus the width of the radius of the hollow circle.

[0138] Alternatively, the mold core pressing ring 35 and the mounting seat 34 can be fixedly connected by connecting members such as bolts.

[0139] In some embodiments, the mold core pressing ring 35 and the mounting seat 34 can be made of metal, and the mold core body 33 can be made of a light-transmitting mold glue with a high molecular component and good ultraviolet light transmittance.

[0140] When the mold core body 33 is made of transparent mold glue, the transparent mold glue can be made by pouring glue and pouring mold, which is easy to operate. Fig.15 and Fig.16 The figure shows a cross-sectional schematic diagram of the process of manufacturing the mold core assembly 3, wherein the structure of the mold turning mold 4 is similar to Figure 7 The structure of the middle mold 4 is the same. Please refer to Figure 7 , Fig.15 and Fig.16 The manufacturing process is as follows: first, assemble the mold core pressing ring 35 and the mounting seat 34, and then install the mounting seat 34 in the receiving groove 21 of the mold-turning mold 4, so that the mounting hole 321 of the mounting seat 34, the first light-through hole 311 of the mold core pressing ring 35, the limiting groove 312 formed by the mold core pressing ring 35 and the mounting seat 34, and the recessed portion 211 of the mold-turning mold 4 form a molding cavity, and finally inject the light-transmitting mold glue into the molding cavity through the mounting hole 321 and the first light-through hole 311, and solidify the light-transmitting mold glue. After the light-transmitting mold glue is solidified, the mold core body 33 formed by the light-transmitting mold glue is tightly fitted with the mounting seat 34 and the mold core pressing ring 35, and the mold core assembly 3 is taken out of the mold-turning mold 4 to complete the manufacturing of the mold core assembly 3.

[0141] Please refer to Fig.13 There is a certain interval between the mold core pressing ring 35 and the first limiting portion 323, so that an annular limiting groove 312 is formed between the mold core pressing ring 35 and the first limiting portion 323. When the mold core body 33 adopts translucent mold glue, in the process of making the mold core body 33, the limiting groove 312 forms an annular glue pulling groove structure, which can evenly fix the translucent mold 1 at the center of the mounting seat 34, so that the translucent mold glue is evenly stressed during the thermal expansion and contraction process, thereby preventing the translucent mold glue from irregularly deforming due to thermal expansion and contraction.

[0142] Compared with traditional optical mold cores that use difficult-to-process metal materials, the light-transmitting mold glue must be processed separately. In this embodiment, only one mold core body 33 sample needs to be processed, and then a large number of low-cost copies can be made based on the mold core body 33 sample, which greatly reduces the cost of making optical mold cores, thereby reducing the cost of making optical components.

[0143] In some embodiments, the material of the light-transmitting mold glue can be polydimethylsiloxane. Compared with the light-transmitting mold glue using other materials, the light-transmitting mold glue in this embodiment uses polydimethylsiloxane, which can reduce the curing temperature of the light-transmitting mold glue from more than 100 degrees to 70 degrees, reduce the deformation of the light-transmitting mold glue due to thermal expansion and contraction, and reduce the risk of deformation of the mold core body 33 after molding.

[0144] When polydimethylsiloxane is used as the light-transmitting mold glue, the process of making the mold core component 3 can be as follows: after the polydimethylsiloxane main agent and the polydimethylsiloxane hardener are evenly mixed at a mass ratio of 10:1, the mixed liquid is poured into the molding cavity composed of the mold core pressure ring 35, the mounting seat 34 and the mold turning mold 4, the mixed liquid is vacuumed and defoamed, and then placed in a 70° C. oven for more than 4 hours to cure the polydimethylsiloxane. After the polydimethylsiloxane is completely cured, the mold core component 3 is pulled out from the mold turning mold 4 to complete the production of the mold core component 3.

[0145] The purpose of degassing the mixture of the polydimethylsiloxane main agent and the polydimethylsiloxane hardener is to avoid bubbles in the mold body 33 to affect the precision of the mold body 33 and ensure the precision of the mold surface of the mold body 33.

[0146] In some embodiments, the light-transmitting mold glue can also be made of other organic materials that are transparent to ultraviolet light, such as TPX (polytetramethylpentene) various optical resins: PMMA (polymethyl methacrylate), PS (polystyrene), PC (polycarbonate), COP&COC (cyclic olefin copolymers also known as cyclic olefin polymers), O-PET (polyethylene terephthalate), etc., which are not specifically limited in this embodiment.

[0147] In some embodiments, the mold body 33 may be made of transparent glass. Fig.17 The figure shows a cross-sectional view of the mold core assembly 3 when the mold core body 33 is made of glass. The mold core assembly 3 includes a mold core pressing ring 35, a mounting seat 34 and a mold core body 33. The mold core body 33 is made of glass, and the mold core pressing ring 35 and the mounting seat 34 can be made of metal.

[0148] When the mold body 33 is made of translucent glass, the process of making the mold assembly 3 is to first use a glass molding method to make the mold body 33, then install the edge-grinded mold body 33 into the mounting seat 34, and finally assemble the mold pressure ring 35 and the mounting seat 34.

[0149] Among them, in order to ensure that the mold body 33 is closely matched with the mold pressure ring 35 and the mounting seat 34, when making the mold body 33, the size of the mold body 33 can be appropriately enlarged, and the mold body 33 can be ground and tested when it is installed in the mounting seat 34, so that the size of the mold body 33 matches the size of the mounting hole 321, avoiding the gap between the mold body 33 and the mold sleeve mounting seat 34 due to dimensional error, which affects the molding quality of the workpiece.

[0150] In this embodiment, when the mold body 33 is made of light-transmitting glass, the mold body 33 can be mass-produced at low cost by using the glass molding method, which greatly reduces the cost of manufacturing optical components. In addition, the use of light-transmitting glass with higher hardness in this embodiment can improve the molding accuracy of the mold body 33 and extend the service life of the mold body 33.

[0151] It should be noted that the glass molding method adopts an existing process method, which will not be elaborated in detail in this embodiment.

[0152] like Fig.18 Shown is the use of Fig.12 The schematic diagram of the mold 1 of the mold core assembly 3 is shown, and the upper mold assembly 2 includes a first template 21 and a second template 22. Along the thickness direction Z of the matrix, the first template 21 is located above the second template 22. The first template 21 and the second template 22 are detachably connected by bolts and other connecting parts to facilitate maintenance and transportation of the two. Among them, the first template 21 is provided with a second light hole 211 connected to the mounting hole 321, and the second template 22 is provided with a limiting hole 221. The mounting seat 34 is fixed to the lower end surface of the first template 21 by bolts, and the mounting seat 34 is arranged in the limiting hole 221, and the molding part 331 of the mold core body 33 protrudes from the limiting hole 221 to cooperate with the cavity.

[0153] This embodiment limits the axial position of the mold core assembly 3 by fixing the mold core assembly 3 on the first template 21, and limits the horizontal position of the mold core assembly 3 by the limiting hole 221, thereby achieving high precision of the mold core assembly 3, so that the mold core assembly 3 can produce high-precision optical components.

[0154] The same or similar parts between the various embodiments in this specification can be referred to each other. In particular, for the device embodiment and the terminal embodiment, since they are basically similar to the method embodiment, the description is relatively simple.

[0155] The above is only a specific implementation of the embodiment of the present application, but the protection scope of the embodiment of the present application is not limited thereto, and any changes or replacements within the technical scope disclosed in the embodiment of the present application should be included in the protection scope of the embodiment of the present application. Therefore, the protection scope of the embodiment of the present application should be based on the protection scope of the claims.

Claims

1. A mold core assembly, characterized in that: The mold core assembly comprises: A mounting member, wherein the mounting member is provided with a connecting mounting hole and a limiting groove, and the notch of the limiting groove faces the center of the mounting hole; The mold core body is made of a light-transmitting material, the mold core body is installed in the installation hole, and a part of the structure of the mold core body cooperates with the limiting groove.

2. The mold core assembly according to claim 1, characterized in that: The mounting member comprises a mold core seat and a mold core sleeve, the mold core sleeve is mounted on the mold core seat, and the mold core seat and the mold core sleeve cooperate to form the limiting groove; The mold core seat is provided with a first light-through hole, the mounting hole is provided on the mold core sleeve, and the mounting hole is communicated with the first light-through hole.

3. The mold core assembly according to claim 2, characterized in that: The side wall of the mounting hole is provided with a first limiting portion protruding inwardly, and the outer side wall of the mold core body is provided with an abutted portion protruding outwardly, and along the thickness direction of the mold core assembly, the abutted portion abuts against the first limiting portion.

4. The mold core assembly according to claim 3, characterized in that: The mold core seat is provided with an abutment portion, and the abutment portion can extend into the mounting hole to abut against the abutted portion; Along the thickness direction of the mold core assembly, there is a gap between the abutting portion and the first limiting portion to form the limiting groove, and the abutted portion cooperates with the limiting groove.

5. The mold core assembly according to any one of claims 2 to 4, characterized in that: The mold core sleeve is detachably connected to the mold core seat.

6. The mold core assembly according to claim 1, characterized in that: The mounting member comprises a mounting seat and a mold core pressing ring, the mounting hole is arranged on the mounting seat, the mold core pressing ring is installed in the mounting hole, and along the thickness direction of the mold core assembly, the mold core pressing ring abuts against the mold core body; The mold core pressing ring is provided with a first light-through hole communicated with the mounting hole.

7. The mold core assembly according to claim 6, characterized in that: The side wall of the mounting hole is provided with a first limiting portion protruding inwardly, and the outer side wall of the mold core body is provided with an abutted portion protruding outwardly, and along the thickness direction of the mold core assembly, the abutted portion abuts against the first limiting portion; Along the thickness direction of the mold core assembly, the mold core pressure ring is located above the first limiting portion, and there is a gap between the two to form the limiting groove, and the abutted portion cooperates with the limiting groove.

8. The mold core assembly according to claim 6 or 7, characterized in that: The mold core pressing ring is detachably connected to the mounting seat.

9. The mold core assembly according to claim 1, characterized in that: The material of the mold core body is polydimethylsiloxane; or The material of the mold core body is glass.

10. A mold, characterized in that: The mold comprises: Upper mold assembly; A mold core assembly, wherein the mold core assembly is the mold core assembly described in any one of claims 1 to 9, and the mold core assembly is installed on the upper mold assembly.

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