Hot press molding mold for lens

Abstract

This utility model relates to the field of lens manufacturing technology, specifically a hot-press forming mold for lenses. It includes: a lower mold base, a lower mold, an upper mold, and an upper mold base. The lower mold base has a heating component and first locking holes at both ends. The lower mold is embedded within the lower mold base and has second locking holes at both ends. The lower mold has several lower forming cavities. The upper mold has third locking holes on both sides and several upper forming cavities at its lower end. Each forming cavity has a first air channel. The upper mold base has fourth locking holes on both sides and a second air channel inside. The second air channel communicates with the first air channel. The first and second locking holes are fixed together by a locking element, and the third and fourth locking holes are also fixed together by a locking element. This utility model ensures mold stability through locking elements, uses a heating component for constant temperature control to prevent glass blank deformation, and efficiently discharges gas through the air channels to prevent surface defects.

Description

Technical Field

[0001] This utility model relates to the field of lens manufacturing technology, and to hot pressing molds for lenses. Background Technology

[0002] With the advancement of technology, optical glass lenses are frequently used in daily life and production processes. Electronic products are developing towards being smaller, thinner, and more multifunctional. For example, digital cameras, computer webcams, mobile phone cameras, video recording (DV) monitoring equipment, etc., all have requirements for video recording functions. Therefore, the large-scale production of glass components (especially aspherical lenses) is the key to the popularization of imaging equipment.

[0003] In actual production, the existing molding mechanism is inconvenient to operate. There is a gap in the operation between when the worker takes the die-cast blank out of the die-casting mold and when the second blank is placed on the die-casting mold. During this period, the heat on the mold will slowly dissipate, resulting in a large temperature difference between the mold and the blank when the second blank is heated. Ultimately, the surface of the die-cast blank will be deformed, affecting the product quality. The production and processing time is long, and the surface of the produced products will be bubbly or uneven, resulting in a low yield. Utility Model Content

[0004] This invention provides a hot-press forming mold for lenses to solve the problems of the prior art.

[0005] The objective of this utility model can be achieved through the following technical solution: a hot-press forming mold for lenses, comprising: a lower mold base, a lower mold, an upper mold, and an upper mold base. The lower mold base is provided with a heating component and has first locking holes at both ends. The lower mold can be embedded in the lower mold base and has second locking holes at both ends. The lower mold has a plurality of lower forming cavities. The upper mold has third locking holes on both sides and a plurality of upper forming cavities at its lower end. The forming cavities are provided with first air channels. The upper mold base has fourth locking holes on both sides and a second air channel inside. The second air channel and the first air channel can be connected. The first locking hole and the second locking hole can be fixed by a locking member. The third locking hole and the fourth locking hole can be fixed by a locking member.

[0006] In a further improvement, the first air passage includes a first lower air passage that communicates with the molding cavity and an air hole that communicates with the first lower air passage. The air hole can communicate with the second air passage.

[0007] In a further improvement, the lower mold base and the upper mold base are provided with limiting grooves on their inner sides, and the lower mold and the upper mold are provided with limiting blocks on their outer sides, with the limiting grooves and the limiting blocks being provided in correspondence.

[0008] In a further improvement, the second airway includes intersecting transverse airways and longitudinal airways.

[0009] In a further improvement, multiple sets of the limiting groove and the limiting block are provided.

[0010] Compared with the prior art, the present invention has the following advantages: the present invention ensures the stability of the mold by locking components, avoids deformation of the glass blank by constant temperature control using heating components, and efficiently discharges gas through the air channel to prevent surface defects. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a partial sectional view of the upper mold of this utility model;

[0013] Figure 3 This is a bottom view of the upper mold base of this utility model.

[0014] In the figure, 1 is the lower mold base; 11 is the heating component; 12 is the first locking hole; 2 is the lower mold; 21 is the second locking hole; 22 is the lower molding cavity; 3 is the upper mold; 31 is the third locking hole; 32 is the upper molding cavity; 321 is the first air passage; 3211 is the first lower air passage; 3212 is the air hole; 4 is the upper mold base; 41 is the fourth locking hole; 42 is the second air passage; 421 is the transverse air passage; 422 is the longitudinal air passage; 51 is the limiting groove; 52 is the limiting block. Detailed Implementation

[0015] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] The following is a description of the embodiments and appendices. Figures 1-3 The technical solution of this utility model will be further described below.

[0018] Example 1

[0019] A hot-press forming mold for lenses includes: a lower mold base 1, a lower mold 2, an upper mold 3, and an upper mold base 4. The lower mold base 1 is provided with a heating component 11 and has first locking holes 12 at both ends. The lower mold 2 can be embedded in the lower mold base 1 and has second locking holes 21 at both ends. The lower mold 2 is provided with a plurality of lower forming cavities 22. The upper mold 3 has third locking holes 31 on both sides and a plurality of upper forming cavities 32 at its lower end. The forming cavity 32 is provided with a first air passage 321. The upper mold base 4 is provided with fourth locking holes 41 on both sides and has a second air passage 42 inside. The second air passage 42 can communicate with the first air passage 321. The first locking hole 12 and the second locking hole 21 can be fixed by a locking member. The third locking hole 31 and the fourth locking hole 41 can be fixed by a locking member.

[0020] like Figures 1-3 As shown, according to the process requirements, this utility model first securely connects the selected lower mold 2 to the lower mold base 1 through locking components to prevent the lower mold 2 from shifting during the hot pressing process. Secondly, the upper mold 3 is installed on the upper mold base 4 and fixed by locking components. Thirdly, the lens blank is placed in the lower forming cavity 22 of the lower mold 2, and the lower mold 2 and the upper mold 3 are precisely closed by means of an external drive mechanism. After forming, the robot transfers the die-cast glass blank to the next process.

[0021] During the hot pressing process, the heating component 11 continuously heats the lower mold 2 to ensure that its temperature is constant, thus preventing excessive temperature difference between the glass blank and the mold due to heat loss from the mold. This prevents deformation of the bottom of the glass blank and ensures product quality. At the same time, during the mold closing process, the air between the lower mold 2 and the forming cavity of the upper mold 3 is discharged through the first air channel 321 and the second air channel 42 to prevent gas accumulation from affecting the surface flatness of the glass blank, thereby improving product quality and yield.

[0022] As a further preferred embodiment, the first air passage 321 includes a first lower air passage 3211 that communicates with the molding cavity 22 and an air hole 3212 that communicates with the first lower air passage 3211. The air hole 3212 may communicate with the second air passage 42.

[0023] Specifically, during the mold closing process, the air between the lower mold 2 and the upper mold 3 forming cavity can be discharged to the outside of the mold through the first lower air channel 3211 and air hole 3212, and then through the second air channel 42, which improves the efficiency of gas discharge and ensures the flatness of the glass blank surface during the forming process.

[0024] As a further preferred embodiment, the lower mold base 1 and the upper mold base 4 are provided with limiting grooves 51 on their inner sides, and the lower mold 2 and the upper mold 3 are provided with limiting blocks 52 on their outer sides, with the limiting grooves 51 and the limiting blocks 52 corresponding to each other.

[0025] Specifically, the cooperation between the limiting groove 51 and the limiting block 52 ensures that the lower mold 2 and the upper mold 3 maintain precise alignment during installation and use, preventing displacement or shaking of the molds during hot pressing, thereby improving molding accuracy and product quality. The limiting groove 51 and the limiting block 52 also facilitate quick installation and disassembly of the molds, improving operational convenience and equipment maintenance efficiency. Furthermore, this limiting structure can adapt to molds of different specifications, enhancing the versatility and flexibility of the equipment.

[0026] As a further preferred embodiment, the second airway 42 includes a transverse airway 421 and a longitudinal airway 422 that are arranged in a cross configuration.

[0027] As a further preferred embodiment, multiple sets of the limiting groove 51 and the limiting block 52 are provided.

[0028] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A hot-press forming mold for lenses, characterized in that, include: The system comprises a lower mold base, a lower mold, an upper mold, and an upper mold base. The lower mold base is equipped with a heating component and has first locking holes at both ends. The lower mold is embedded in the lower mold base and has second locking holes at both ends. The lower mold has several lower forming cavities. The upper mold has third locking holes on both sides and several upper forming cavities at its lower end. The forming cavities have first air passages inside. The upper mold base has fourth locking holes on both sides and second air passages inside. The second air passages can communicate with the first air passages. The first locking holes and the second locking holes can be fixed together by a locking member. The third locking holes and the fourth locking holes can be fixed together by a locking member.

2. The hot-press forming mold for lenses according to claim 1, characterized in that, The first air passage includes a first lower air passage that communicates with the molding cavity and an air hole that communicates with the first lower air passage. The air hole may communicate with the second air passage.

3. The hot pressing mold for lenses according to claim 1, characterized in that, The lower mold base and the upper mold base are provided with limit grooves on their inner sides, and the lower mold and the upper mold are provided with limit blocks on their outer sides. The limit grooves and the limit blocks are provided in correspondence.

4. The hot-press forming mold for lenses according to claim 1, characterized in that, The second airway includes intersecting transverse airways and longitudinal airways.

5. The hot-press forming mold for lenses according to claim 3, characterized in that, The limiting groove and limiting block are provided in multiple sets.

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