Aspheric lens mold pressing mold

Abstract

The utility model discloses an aspheric lens mould pressing mould which comprises an upper mould and a lower mould, the upper mould comprises an upper main body part located in the middle and upper hanging tables located on the two sides, and the tops of the upper hanging tables incline downwards; the lower die comprises a lower main body part located in the middle and lower hanging tables located on the two sides, and the lower hanging tables and the lower main body part are of a split structure. The tops of the upper hanging tables incline downwards, so that the force bearing area of the upper die is located on the upper main body part, and the stress of the upper hanging tables on the two sides can be effectively reduced. The lower hanging table and the lower main body part are of a split structure, and compared with a traditional integrated structure, a force bearing area of the lower die can be located on the lower main body part, and the stress of the lower hanging table can be effectively reduced. And the lower hanging table can also play a role of an extension structure, so that the limiting sleeve can be arranged on the lower hanging table, the limiting sleeve is prevented from being in direct sliding contact with the equipment forming plate, and the problem of sliding abrasion and aging of the limiting sleeve can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of aspheric lens mould pressing processing, in particular to an aspheric lens mould pressing mould. BACKGROUND

[0002] In prior art, the mould material used for glass aspheric lens mould pressing forming is mostly tungsten steel, which has good stability but is brittle. Aspheric mould pressing belongs to high-temperature hot pressing forming, and the mould needs to bear large pressure in the forming process, so the hanging table on the mould in prior art is prone to force damage, which makes it difficult to further reduce the damage and scrap rate of mould pressing forming, which is a big pain point of mould pressing forming technology. SUMMARY

[0003] The utility model aims at providing an aspheric lens mould pressing mould which can effectively reduce the force damage rate of the hanging table and the damage and scrap rate of mould pressing forming.

[0004] Technical scheme: The aspheric lens mould pressing mould, comprising an upper mould and a lower mould, the upper mould comprises an upper main body part in the middle and upper hanging tables on both sides, and the top of the upper hanging table is inclined downward; the lower mould comprises a lower main body part in the middle and lower hanging tables on both sides, and the lower hanging table and the lower main body part are of a split structure.

[0005] Further, the two side walls of the lower main body part are provided with outward protrusions, and the lower hanging table is provided with grooves matched with the protrusions.

[0006] Further, the upper main body part and the upper hanging table are of an integrated structure.

[0007] Further, the utility model further comprises a limiting sleeve, and the limiting sleeve is arranged on the lower hanging table. In this way, the lower hanging table can also play a role as an epitaxial structure, so that the limiting sleeve can be arranged on the lower hanging table, avoiding direct sliding contact of the limiting sleeve with the equipment forming plate, thereby solving the problem of sliding wear and aging of the limiting sleeve.

[0008] Further, the limiting sleeve is made of SUS stainless steel.

[0009] Further, the utility model further comprises a type sleeve, and the type sleeve is arranged on the lower hanging table, and the bottom of the upper main body part and the top of the lower main body part are arranged in the type sleeve.

[0010] Further, the bottom of the upper main body part is provided with a protruding area.

[0011] Further, the top of the lower main body part is provided with a recessed area for placing raw materials before mould pressing.

[0012] Further, the upper mould and the lower mould are made of tungsten steel.

[0013] Beneficial effects: The utility model discloses an aspheric lens molding die, which has the following beneficial effects compared with the prior art:

[0014] 1. The top of the upper hanging platform of the utility model is tilted downward, so that the load-bearing area of ​​the upper mold is on the upper main body, which can effectively reduce the force on the upper hanging platforms on both sides. While retaining the upper hanging platform structure, it can also reduce the stress damage rate of the upper hanging platform;

[0015] 2. The lower hanging platform and the lower main body of the utility model are of a separate structure. Compared with the traditional integrated structure, the load-bearing area of ​​the lower mold can be placed on the lower main body, which can effectively reduce the stress on the lower hanging platform. While retaining the structure of the lower hanging platform, it can also reduce the stress damage rate of the lower hanging platform.

[0016] 3. The lower hanging platform of the present invention can also serve as an extension structure, so that the limit sleeve can be set on the lower hanging platform to avoid direct sliding contact between the limit sleeve and the equipment forming plate, thereby solving the problem of sliding wear and aging of the limit sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a cross-sectional structural diagram of the aspheric lens molding die before molding in a specific embodiment of the present invention;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a cross-sectional structural diagram of the aspheric lens molding mold after molding in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0020] This embodiment discloses a mold for molding an aspheric lens. Figure 1 As shown, it includes an upper die 1 and a lower die 2, which are made of tungsten steel.

[0021] Among them, the upper mold 1 includes an upper main body 11 located in the middle and upper hanging platforms 12 located on both sides. The upper main body 11 and the upper hanging platforms 12 are an integrated structure. The top of the upper hanging platforms 12 is tilted downward, so that the load-bearing area of ​​the upper mold 1 is on the upper main body 11, which can effectively reduce the force on the upper hanging platforms 12 on both sides. While retaining the structure of the upper hanging platforms 12, it can reduce the force breakage rate of the upper hanging platforms 12.

[0022] The lower mold 2 comprises a central lower body 21 and two side lower hanging platforms 22. The lower body 21 and the lower hanging platforms 22 are separate structures. Compared to a traditional one-piece structure, this allows the load-bearing area of ​​the lower mold 2 to be located on the lower body 21, effectively reducing the stress on the lower hanging platforms 22. While retaining the structure of the lower hanging platforms 22, the stress breakage rate of the lower hanging platforms 22 can also be reduced. The bottom of the upper body 11 is provided with a raised area, and the top of the lower body 21 is provided with a recessed area for placing the raw material 5 before molding.

[0023] Figure 2 yes Figure 1 The enlarged view of point A in the middle is as follows: Figure 2 As shown, outward protrusions 211 are provided on both side walls of the lower main body 21 , and grooves 221 adapted to the protrusions 211 are provided on the lower hanging platform 22 .

[0024] The aspheric lens molding die also includes a limiting sleeve 3 and a mold sleeve 4. Figure 1 As shown, the limiting sleeve 3 is mounted on the lower hanging platform 22 and is made of SUS stainless steel. This lower hanging platform 22 also serves as an extension structure, allowing the limiting sleeve 3 to be mounted on the lower hanging platform 22, preventing direct sliding contact between the limiting sleeve 3 and the equipment forming plate, thereby resolving the issue of sliding wear and aging of the limiting sleeve 3. The mold sleeve 4 is mounted on the lower hanging platform 22, with the bottom of the upper body 11 and the top of the lower body 21 both sleeved within the mold sleeve 4.

[0025] Figure 1 It is a structural diagram before molding, and the raw material 5 before molding is placed between the upper mold 1 and the lower mold 2. Figure 3 This is a structural diagram after molding. It can be seen that after molding, the raw material 5 has become a lens 6.

[0026] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. An aspheric lens molding die, comprising an upper die (1) and a lower die (2), characterized in that: The upper mold (1) comprises an upper main body (11) located in the middle and upper hanging platforms (12) located on both sides, and the top of the upper hanging platforms (12) is inclined downward; the lower mold (2) comprises a lower main body (21) located in the middle and lower hanging platforms (22) located on both sides, and the lower hanging platforms (22) and the lower main body (21) are of a split structure.

2. The aspheric lens molding die according to claim 1, wherein: Both side walls of the lower main body (21) are provided with outward protrusions (211), and the lower hanging platform (22) is provided with grooves (221) adapted to the protrusions (211).

3. The aspheric lens molding die according to claim 1, wherein: The upper main body (11) and the upper hanging platform (12) are an integrated structure.

4. The aspheric lens molding die according to claim 1, wherein: It also includes a limiting sleeve (3), which is arranged on the lower hanging platform (22).

5. The aspheric lens molding die according to claim 4, characterized in that: The limiting sleeve (3) is made of SUS stainless steel.

6. The aspheric lens molding die according to claim 1, wherein: It also includes a mold sleeve (4), which is arranged on the lower hanging platform (22), and the bottom of the upper main body (11) and the top of the lower main body (21) are both sleeved inside the mold sleeve (4).

7. The aspheric lens molding die according to claim 1, wherein: A raised area is provided at the bottom of the upper main body (11).

8. The aspheric lens molding die according to claim 1, wherein: The top of the lower main body (21) is provided with a recessed area for placing the raw material (5) before molding.

9. The aspheric lens molding die according to claim 1, wherein: The upper die (1) and the lower die (2) are both made of tungsten steel.

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