CN112476868B - Method for controlling temperature and performance of precision mold and precision mold - Google Patents

Method for controlling temperature and performance of precision mold and precision mold Download PDF

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Publication number
CN112476868B
CN112476868B CN202011162193.2A CN202011162193A CN112476868B CN 112476868 B CN112476868 B CN 112476868B CN 202011162193 A CN202011162193 A CN 202011162193A CN 112476868 B CN112476868 B CN 112476868B
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die
temperature
upper die
lower die
mould
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CN112476868A (en
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周天丰
周佳
阮本帅
刘朋
赵斌
颜培
梁志强
刘志兵
焦黎
解丽静
王西彬
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Beijing Institute of Technology BIT
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Beijing Institute of Technology BIT
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/30—Mounting, exchanging or centering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
    • B29C2033/042—Meander or zig-zag shaped cooling channels, i.e. continuous cooling channels whereby a plurality of cooling channel sections are oriented in a substantial parallel direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2011/00—Optical elements, e.g. lenses, prisms

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The invention discloses a method for controlling the temperature and the controllability of a precision die and the precision die, which comprises the following steps: 1) selecting working surfaces of an upper die and/or a lower die to prepare a nickel phosphide Ni-P coating according to whether the optical part has a structure on one surface or both surfaces; 2) processing an optical part microstructure on the nickel phosphide Ni-P coating; 3) machining fluid channels for passing cooling liquid on the upper die and/or the lower die with the optical part microstructure; 4) circulating cooling liquid is introduced into the fluid channel, and the temperature of the upper die and/or the lower die is controlled to be lower than 350 ℃; the invention can control the precipitation of nickel crystal by reducing the temperature during the forming process of the die so as to maintain the forming precision of the die and further improve the service life of the die.

Description

Method for controlling temperature and performance of precision mold and precision mold
Technical Field
The invention relates to the field of optical part processing and forming dies, in particular to a method for controlling the temperature and the controllability of a precision die and the precision die.
Background
The ultra-precision manufacturing of the die is the primary foundation for realizing the precision forming technology of the optical parts. The nickel phosphide Ni-P material has the hardness of 500-600HV, good high-temperature service performance and good cutting performance, can obtain an optical surface with the surface roughness of more than 10nm and the morphology error of more than 0.3 mu m by a single-point diamond cutting technology, and is an ideal material for forming dies. The optical component forming process requires heating the material and the mold together to a temperature above the optical material transition temperature, controlling the forming pressure to transfer the surface shape of the mold to the surface of the material, and then cooling and taking out the optical component.
However, the existing precision mold for optical parts has a problem that the precision of the formed optical parts is reduced after the existing precision mold for optical parts is used for a period of time, and the mold needs to be replaced or repaired, so the existing precision mold for optical parts has a problem of short service life; the Chinese patent with application publication number CN 105385999A discloses a method for prolonging the cycle service life of lens die steel, which improves SP (phase position) by depositing diamond-like carbon on the surface of the die steel and improving the process3The content of the bonding is such that the properties such as hardness are remarkably improved and the service life is prolonged, that is, the patent document improves the properties of the die steel by improving the properties of the surface material of the die to improve the service life, however, the patent document avoids the abrasion problem of the die steel, and does not relate to the improvement of the forming precision of the optical component and does not disclose the improvement of the service life of the die in terms of the forming precision. In order to keep the forming precision, a film coating method is generally adopted in the prior art, but the technical effect achieved after film coating is limited, and the service life is not ideal; the mould needs to be subjected to a thermal cycle process of temperature rise and temperature reduction in a complete production period, the optical materials are various, the forming temperature of the optical materials can reach 800 ℃ at most, researches show that the nickel phosphide Ni-P material is easy to generate crystalline phase structure change at a high temperature of over 400 ℃, the material is converted from an amorphous state to a crystalline state, nickel grains can be separated out on the surface of the mould in the process, and the grains become coarser along with the increase of the thermal cycle times along with the increase of the temperature, so that the forming precision of optical parts is influenced finally; the thickness of the coating film is usually thinner and is hundreds of nanometers, and the coating film is separated outThe size of the nickel crystal particles is micron-sized, the nickel crystal particles separated out can deteriorate the flatness of the film layer, and finally the forming precision and the service life of a die can be influenced; therefore, how to better prolong the service time of the mold for keeping the forming precision, namely prolonging the service life of the mold is an urgent problem to be solved.
Disclosure of Invention
The invention aims to provide a method for controlling the temperature and the controllability of a precision die and the precision die, which are used for solving the problems in the prior art, and can control the precipitation of nickel crystals by reducing the temperature during the forming process of the die so as to keep the forming precision of the die and further prolong the service life of the die.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a method for controlling the temperature and the controllability of a precise mold, which comprises the following steps:
1) selecting working surfaces of an upper die and/or a lower die to prepare a nickel phosphide Ni-P coating according to whether the optical part has a structure on one surface or both surfaces;
2) processing an optical part microstructure on the nickel phosphide Ni-P coating;
3) machining fluid channels for passing cooling liquid on the upper die and/or the lower die with the optical part microstructure;
4) and introducing circulating cooling liquid into the fluid channel, and controlling the temperature of the upper die and/or the lower die to be lower than 350 ℃.
Preferably, the cooling liquid is cooling water, and the temperature of the cooling water is 20 ℃ when the cooling water is introduced.
Preferably, the mold is heated during the process of forming the optical component using the mold, and cooling water is introduced before the mold is heated.
Preferably, in the step 1), when only one surface of the optical component has a structure, the working surface of the upper die is selected to prepare the nickel phosphide Ni-P coating.
The invention also provides a precision die, and the method for controlling the temperature and the control performance of the precision die is applied when in use, and comprises an upper die and a lower die, wherein a nickel phosphide Ni-P coating is arranged on the working surface of the upper die and/or the lower die, and an optical part microstructure is processed on the surface of the nickel phosphide Ni-P coating; a fluid channel is arranged in the upper die and/or the lower die which is processed with the optical part microstructure and is close to the working surface; the fluid channel is used for circulating cooling liquid to keep the temperature of the upper die and/or the lower die below 350 ℃.
Preferably, the upper die and/or the lower die provided with the fluid channel are connected with a temperature control module, the temperature control module comprises a temperature sensor arranged on the upper die and/or the lower die and close to a working surface, and when the temperature detected by the temperature sensor exceeds 350 ℃, the flow rate of the cooling liquid is adjusted or the on-off of the cooling liquid is controlled so as to keep the temperature below 350 ℃.
Preferably, the outer sides of the upper die and the lower die are sequentially sleeved with an inner cylinder and an outer cylinder, the inner cylinder is lower than the sum of the heights of the upper die and the lower die, contacts with the upper die and the lower die and guides the upper die and the lower die to move up and down, and the outer cylinder is higher than the sum of the heights of the upper die and the lower die and can limit a gap between the upper die and the lower die during pressing.
Preferably, the upper end of going up the mould is provided with first flange, the lower extreme of lower mould is provided with the second flange, the inner muff-coupling is established first flange with between the second flange, the outer muff-coupling is established first flange the second flange and the outside of inner muff-coupling.
Preferably, the optical component microstructure comprises an aspheric surface, a free-form surface, a microstructure array and a microlens array.
Preferably, the vertical section of the fluid channel is U-shaped, the fluid channel is provided with a plurality of fluid channels, and the fluid channels are uniformly distributed in the upper die and/or the lower die, and the inlet and the outlet of the fluid channel are both arranged on the outer end surface of the upper die and/or the lower die.
Compared with the prior art, the invention has the following technical effects:
(1) according to the invention, according to whether the optical part is of a single-sided or double-sided structure, the optical part microstructure is processed on the upper die and/or the lower die of the die, the fluid channel is processed on the upper die and/or the lower die with the optical part microstructure, and cooling liquid is introduced into the fluid channel to cool the die, so that the temperature of the working surface of the die can be reduced, and the working surface of the die is lower than the crystallization temperature of a nickel phosphide Ni-P material in most of time, thereby the precipitation of nickel crystals can be reduced to the maximum extent, further the influence of nickel crystal particles on the forming precision of the optical part is avoided, and the service life of the die is prolonged;
(2) the inner cylinders are sleeved on the outer sides of the upper die and the lower die, are lower than the sum of the heights of the upper die and the lower die, are in contact with the upper die and the lower die and guide the upper die and the lower die to move up and down, namely the upper die and the lower die can be kept centered by arranging the inner sleeves; the outer cylinder is arranged on the outer side of the inner cylinder, is higher than the sum of the heights of the upper die and the lower die, and can limit the gap between the upper die and the lower die during pressing, namely the outer cylinder can maintain the pressure during die pressing and control the thickness precision of the lens;
(3) when only one side of the optical part has a structure, the invention selects to prepare the nickel phosphide Ni-P coating on the working surface of the upper die or the lower die, namely, the side of the optical part without the structure is not prepared with the nickel phosphide Ni-P coating, and the fluid channel is not arranged, so that the temperature can be always kept high, the blank material can quickly reach the softening temperature of the blank after being placed in the die, and the working efficiency can be ensured on the premise of avoiding the influence of nickel crystal particles on the forming precision of the optical part and the service life of the die.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a sectional view of the mold of the present invention in a state before closing the mold;
FIG. 2 is a sectional view of the mold of the present invention in a closed state;
wherein, 1, an upper die; 11. a fluid channel; 12. an optical component microstructure; 2. a lower die; 3. an inner sleeve; 4. an outer sleeve; 5. and (5) blank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a method for controlling the temperature and the controllability of a precision die and the precision die, which are used for solving the problems in the prior art, and can control the precipitation of nickel crystals by reducing the temperature during the forming processing of the die so as to keep the forming precision of the die and further prolong the service life of the die.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1 and 2, the present invention provides a method for controlling temperature and humidity of a precision mold, comprising the following steps:
1) according to whether the optical part has a structure on one side or both sides, the working surface of the upper die 1 and/or the lower die 2 is selected to prepare the nickel phosphide Ni-P coating, that is, when the optical part has a structure on one side and the other side is a plane, the nickel phosphide NI-P coating is only required to be prepared on the working surface of the upper die 1 or the lower die 2, and only when the optical part has structures on both sides, the nickel phosphide Ni-P coating is required to be prepared on both the upper die 1 and the lower die 2, and the thickness of the nickel phosphide Ni-P coating is required to be larger than the height of the surface structure of the optical part, so that the optical part microstructure 12 can be processed on the nickel phosphide Ni-P coating;
2) processing the optical component microstructure 12 on the Ni-P plating layer by an ultra-precision processing method, it should be noted that the specific ultra-precision processing method is known by those skilled in the art and is not the creative point of the present invention, and will not be described herein again;
3) processing a fluid channel 11 on the upper die 1 and/or the lower die 2 with the optical component microstructure 12, wherein the fluid channel 11 is used for being filled with cooling liquid, it should be noted that the processing of the fluid channel 11 can be completed before or after the step 1) of preparing the nickel phosphide Ni-P plating layer, and is not particularly limited;
4) circulating cooling liquid is introduced into the fluid channel 11, the cooling liquid can be directly utilized at room temperature (18-25 ℃), refrigeration is not needed, the temperature of the upper die 1 and/or the lower die 2 is controlled to be lower than 350 ℃, the temperature range can avoid or reduce the nickel phosphide Ni-P coating from generating crystalline phase structure change under a high-temperature environment to separate out nickel grains as far as possible, and therefore the influence of the nickel grains on the forming precision of optical parts is reduced to the minimum.
The cooling liquid introduced into the fluid channel 11 is generally cooling water, the temperature of the present invention is preferably 20 ℃ when introducing, of course, to ensure the cooling effect, the cooling water is recycled, and a heat dissipation facility for a cooling water circulation pipeline, such as a cooling fan or a heat dissipation fin, may be arranged outside the mold.
The heating process is characterized in that the mold is heated in the process of machining and forming the optical parts, the purpose of heating is to heat and soften the blank 5 between the upper mold 1 and the lower mold 2 to achieve a plastic state, cooling water is introduced into the fluid channel 11 before the mold is heated, so that the phenomenon that the temperature is increased too fast to reach the precipitation temperature of nickel crystals can be avoided, and in addition, the heating process adopts an infrared radiation heating mode, so that the heating or heat source cutting can be rapidly carried out, and the temperature of the mold can be controlled conveniently.
It should be noted that, in step 1), when only one side of the optical component has a structure, the working surface of the upper die 1 is preferably selected to prepare the nickel phosphide Ni-P plating layer, that is, the optical component microstructure 12 is prepared on the working surface of the upper die 1, so that, during die pressing, the blank 5 is firstly placed on the lower die 2 to be heated (at this time, the lower die 2 is not filled with cooling water, and the temperature is relatively high), the blank 5 can be rapidly heated without affecting the nickel phosphide Ni-P plating layer of the upper die 1, and during die pressing, the upper die 1 descends, and the die pressing process is completed in a short time, so that the effect of die pressing can be ensured, and the effect on the nickel phosphide Ni-P plating layer of the upper die 1 can be fully avoided.
The invention also provides a precision die, and the method for controlling the temperature and the temperature of the precision die is applied when in use, as shown in the figure 1 and the figure 2, the die comprises an upper die 1 and a lower die 2, a nickel phosphide Ni-P coating is arranged on the working surface of the upper die 1 and/or the lower die 2, and an optical part microstructure 12 is processed on the surface of the nickel phosphide Ni-P coating; a fluid channel 11 is arranged in the upper die 1 and/or the lower die 2, which is provided with the optical component microstructure 12, near the working surface, and it should be noted that the fluid channel 11 is a channel directly machined on the die or a pipeline arranged in the channel, and there may be a plurality of arrangement modes for the shape of the fluid channel 11, for example, a spiral annular structure parallel to the working surface, a structure with a U-shaped vertical cross section, and the like, and of course, the die needs to be separately machined or cast to form a special internal structure during manufacturing, and the specific manufacturing process is known by those skilled in the art and is not described herein again; the fluid channel 11 is used for circulating cooling liquid to keep the temperature of the upper die 1 and/or the lower die 2 lower than 350 ℃, and for the temperature control mode, a non-contact temperature detection (such as infrared temperature measurement) mode can be adopted, the temperature of the surface of the die can be directly monitored at the moment, a mode of arranging a temperature sensor in the die can be adopted for detection, and in addition, the indirect monitoring of the die temperature can be realized by monitoring the temperature of the cooling liquid.
In order to realize temperature control, the upper die 1 and/or the lower die 2 provided with the fluid channel 11 are/is connected with a temperature control module, the temperature control module comprises a controller and a temperature sensor which is electrically connected with the controller and is arranged in the die and close to a working surface, when the temperature detected by the temperature sensor exceeds 350 ℃, a temperature signal is fed back to the controller, and whether a pump body is started or stopped or not is controlled under the action of the controller, or the opening size of a valve on a pipeline for liquid circulation is controlled, so that the flow rate of cooling liquid can be adjusted or the on-off of the cooling liquid can be controlled, the temperature of the die can be kept to be lower than 350 ℃, and in addition, if necessary, whether heating is controlled by the controller or not so as to control the fluctuation range of the temperature.
The outer sides of the upper die 1 and the lower die 2 are sequentially sleeved with an inner sleeve 3 and an outer sleeve 4, the inner sleeve 3 is lower than the sum of the heights of the upper die 1 and the lower die 2 and is in contact with the upper die 1 and the lower die 2 to guide the upper die 2 and the lower die to move up and down, so that the moving position precision of the upper die 1 can be limited, the precision of a molded optical part is ensured to meet the requirement, in addition, the inner sleeve 3 and the upper die 1 and the lower die 2 can jointly form a closed space for a blank 5, the influence of external air flow on the temperature of the blank 5 can be avoided in the working process, and the temperature loss is avoided; the outer sleeve 4 is higher than the sum of the heights of the upper die 1 and the lower die 2, and can limit the gap between the upper die 1 and the lower die 2 during pressing, that is, when a pressing plate of the device drives the upper die 1 to move downwards, the pressing plate reaches a certain position and can be limited by the outer sleeve 4 and cannot move downwards continuously, and at the moment, the pressing plate is kept at the position, so that the gap between the upper die 1 and the lower die 2 can be controlled, that is, the structural size of the optical part formed by the blank 5 in the height direction can be controlled, and the forming precision of the optical part is improved.
Specifically, the upper end of the upper die 1 is provided with a first flange, the lower end of the lower die 2 is provided with a second flange, the inner sleeve 3 is sleeved between the first flange and the second flange, the outer sleeve 4 is sleeved outside the first flange, the second flange and the inner sleeve 3, it should be noted that the upper die 1, the lower die 2 and the inner sleeve 3 are in a guide fit relationship, therefore, a gap between the upper die 1 and the lower die should be small enough to ensure sufficient guide precision, and lubricating oil can be arranged between the upper die and the lower die to improve the lubricating effect, and the first flange, the second flange and the outer sleeve 4 are not in a guide fit relationship, so the gap between the first flange and the second flange is relatively large, and special setting is not needed.
Optical component microstructures 12 including aspheric surfaces, free-form surfaces, microstructure arrays, microlens arrays and the like are correspondingly processed on the nickel phosphide Ni-P plating layer of the upper die 1 and/or the lower die 2 according to the structural type of the optical component.
The fluid channel 11 can be set to a structure with a U-shaped vertical section, a plurality of fluid channels are arranged side by side and are uniformly distributed inside the upper die 1 and/or the lower die 2, and because the upper die 1 and the lower die 2 are integrally wrapped by the inner sleeve 3 and the outer sleeve 4, at the moment, the inlet and the outlet of the fluid channel 11 are correspondingly arranged at the end surface positions of the upper die 1 and the lower die 2 and are correspondingly communicated with an external fluid pipeline.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (8)

1. A method for controlling the temperature and the controllability of a precise mold is characterized by comprising the following steps: the method comprises the following steps:
1) selecting working surfaces of an upper die and/or a lower die to prepare a nickel phosphide Ni-P coating according to whether the optical part has a structure on one surface or both surfaces;
2) processing an optical part microstructure on the nickel phosphide Ni-P coating;
3) machining fluid channels for passing cooling liquid on the upper die and/or the lower die with the optical part microstructure;
4) circulating cooling liquid is introduced into the fluid channel, and the temperature of the upper die and/or the lower die is controlled to be lower than 350 ℃;
in the step 1), when only one surface of the optical part has a structure, selecting a working surface of an upper die to prepare a nickel phosphide Ni-P coating;
heating the mold in the process of processing and forming the optical parts by using the mold, and introducing cooling water before heating the mold;
and the upper die descends during die pressing to finish the die pressing process.
2. The method for controlling the temperature and the humidity of the precision mold according to claim 1, wherein: the cooling liquid is cooling water, and the temperature of the cooling water is 20 ℃ when the cooling water is introduced.
3. A precision mold, when in use, the method for controlling temperature and temperature of the precision mold according to claim 1 or 2 is applied, wherein: the optical component comprises an upper die and a lower die, wherein a nickel phosphide Ni-P coating is arranged on the working surface of the upper die and/or the lower die, and an optical component microstructure is processed on the surface of the nickel phosphide Ni-P coating; a fluid channel is arranged in the upper die and/or the lower die which is processed with the optical part microstructure and is close to the working surface; the fluid channel is used for circulating cooling liquid to keep the temperature of the upper die and/or the lower die below 350 ℃.
4. The precision mold of claim 3, wherein: the upper die and/or the lower die provided with the fluid channel are/is connected with a temperature control module, the temperature control module comprises a temperature sensor which is arranged on the upper die and/or the lower die and is close to a working surface, and when the temperature detected by the temperature sensor exceeds 350 ℃, the flow rate of the cooling liquid is adjusted or the on-off of the cooling liquid is controlled so as to keep the temperature lower than 350 ℃.
5. The precision mold of claim 4, wherein: go up the mould with the outside of lower mould is overlapped in proper order and is equipped with inner skleeve and outer sleeve, the inner skleeve is less than go up the mould with the high sum of lower mould, and with go up the mould with the lower mould contact and reciprocate it and lead, the outer sleeve is higher than go up the mould with the high sum of lower mould, and can inject when the suppression go up the mould with clearance between the lower mould.
6. The precision mold of claim 5, wherein: the upper end of going up the mould is provided with first flange the lower extreme of lower mould is provided with the second flange, the inner skleeve cover is established first flange with between the second flange, the outer skleeve cover is established first flange the second flange and the outside of inner skleeve.
7. The precision mold according to any one of claims 3 to 6, wherein: the optical part microstructure comprises an aspheric surface, a free-form surface, a microstructure array and a micro-lens array.
8. The precision mold of claim 7, wherein: the vertical section of the fluid channel is U-shaped, a plurality of fluid channels are arranged and evenly distributed in the upper die and/or the lower die, and the inlet and the outlet of the fluid channel are arranged on the outer end face of the upper die and/or the lower die.
CN202011162193.2A 2020-10-27 2020-10-27 Method for controlling temperature and performance of precision mold and precision mold Active CN112476868B (en)

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Publication number Priority date Publication date Assignee Title
TW322445B (en) * 1995-09-29 1997-12-11 Johnson & Johnson Vision Prod
TW518698B (en) * 1999-11-09 2003-01-21 Towa Corp Die used for resin-sealing and molding an electronic component

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5099053B2 (en) * 2009-03-13 2012-12-12 コニカミノルタアドバンストレイヤー株式会社 Method for producing glass mold and method for producing glass molded body
CN106381482A (en) * 2016-09-13 2017-02-08 北京理工大学 Chemical plating solution for Ni-P plated layer and controllable preparation method of micro-nano mold
CN110304816B (en) * 2019-01-25 2020-11-20 北京理工大学 Method for manufacturing glass lens cut one by one in array forming
CN111763001B (en) * 2020-06-10 2021-08-20 北京理工大学 Multi-material combined die for high-precision glass die forming

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW322445B (en) * 1995-09-29 1997-12-11 Johnson & Johnson Vision Prod
TW518698B (en) * 1999-11-09 2003-01-21 Towa Corp Die used for resin-sealing and molding an electronic component

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