CN216039227U

CN216039227U - Lens hot-pressing forming die

Info

Publication number: CN216039227U
Application number: CN202121708933.8U
Authority: CN
Inventors: 姚祖义
Original assignee: Zhejiang Huaju Optical Co ltd
Current assignee: Zhejiang Huaju Optoelectronics Co.,Ltd.
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-03-15
Anticipated expiration: 2031-07-26

Abstract

The utility model discloses a lens hot-press forming die, which comprises: the forming part comprises a bottom cover, a sleeve and a pressing block, the bottom cover, the sleeve and the pressing block are arranged concentrically, the bottom cover is arranged below the sleeve, an accommodating cavity which is communicated up and down is formed in the sleeve, the pressing block is arranged in the accommodating cavity, and a concave die cavity is arranged below the pressing block; the sliding positioning block is square, and a placing hole for placing the forming part is formed in the middle of the sliding positioning block. The utility model has the beneficial effects that: 1. the glass lens can be quickly and accurately molded, and compared with a material removing and processing method such as grinding and polishing, the molding quality is higher, and the production efficiency is higher; 2. can process two glass material blanks simultaneously and has high production efficiency.

Description

Lens hot-pressing forming die

Technical Field

The utility model belongs to the field of lens production equipment, and particularly relates to a lens hot-press forming die.

Background

The traditional manufacturing method of the optical glass element generally adopts a material removing and processing method such as grinding and polishing, the processing precision is unstable, and the production efficiency is low. The precise forming of the glass lens is divided into four processes of heating, hot pressing, annealing and cooling demoulding, which need to be carried out on different devices, such as heating softening devices, pressing devices and the like, so that manual transfer is needed in the process, the efficiency is low, the quality of the finished product of the lens is influenced, and the method is not suitable for industrial scale mass production.

In summary, in order to solve the existing technical problems, the utility model designs the lens hot-press forming mold which is simple in structure, rapid and accurate in forming and high in yield.

Disclosure of Invention

The utility model aims to solve the technical problems in the prior art and designs a lens hot-pressing forming die which is simple in structure, rapid and accurate in forming and high in yield.

The purpose of the utility model can be realized by the following technical scheme:

a lens hot-press molding die comprising:

the forming part comprises a bottom cover, a sleeve and a pressing block, the bottom cover, the sleeve and the pressing block are arranged concentrically, the bottom cover is arranged below the sleeve, an accommodating cavity which is communicated up and down is formed in the sleeve, the pressing block is arranged in the accommodating cavity, and a concave die cavity is arranged below the pressing block;

the sliding positioning block is square, and a placing hole for placing the forming part is formed in the middle of the sliding positioning block.

Furthermore, the molding part and the sliding positioning block are made of graphite materials.

Furthermore, a lug matched with the lower opening of the accommodating cavity is arranged above the bottom cover.

Furthermore, the placing holes are symmetrically provided with two, and the forming part is provided with two corresponding to the placing holes.

Furthermore, a plurality of inclined grooves are formed in the upper surface of the sliding positioning block.

Compared with the prior art, the utility model has reasonable structure and arrangement: 1. the glass lens can be quickly and accurately molded, and compared with a material removing and processing method such as grinding and polishing, the molding quality is higher, and the production efficiency is higher; 2. can process two glass material blanks simultaneously and has high production efficiency.

Drawings

FIG. 1 is a schematic overall view of the present mold;

FIG. 2 is a schematic view of a molding section;

FIG. 3 is a schematic view of a slide locating block;

FIG. 4 is a schematic sectional view of the present mold;

referring to fig. 1-4, wherein: 1. a molding portion; 11. a bottom cover; 111. a bump; 12. a sleeve; 121. an accommodating chamber; 13. briquetting; 131. a cavity; 2. sliding a positioning block; 21. placing holes; 22. an oblique groove.

Detailed Description

The technical solution of the present invention is further illustrated by the following examples. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

a lens hot-press molding die comprising:

the molding part 1 comprises a bottom cover 11, a sleeve 12 and a pressing block 13, wherein the bottom cover 11, the sleeve 12 and the pressing block 13 are concentrically arranged, the bottom cover 11 is arranged below the sleeve 12, a containing cavity 121 which is through up and down is formed in the sleeve 12, the pressing block 13 is arranged in the containing cavity 121, and a concave die cavity 131 is arranged below the pressing block 13;

the device comprises a sliding positioning block 2, wherein the sliding positioning block 2 is square, and a placing hole 21 for placing the forming part 1 is formed in the middle of the sliding positioning block 2.

Specifically, the die is matched with production line type hot-pressing equipment for use; when the glass blank hot-press forming die is used, the sleeve 12 is placed on the bottom cover 11, then a glass blank is placed in the containing cavity 121, the pressing block 13 is placed in the containing cavity 12, the concave die cavity 131 of the pressing block 13 is pressed on the glass blank, the assembled forming part 1 is placed in the placing hole 21 of the sliding positioning block 2, and then the die can be placed in hot-press equipment for hot-press forming; during molding, the mold is firstly positioned at a preheating station, the temperature of the glass blank in the accommodating cavity 121 is gradually increased, and the problems that the temperature inside and outside the glass blank is not uniform and the glass blank expands with heat and contracts with cold to cause burst due to direct hot pressing and over-fast temperature rise are prevented; after preheating is finished, the hot pressing equipment moves the sliding positioning block 2 to drive the forming part 1 to a hot pressing station, the pressure mechanism presses the pressing block 13 downwards from the upper part, and the concave die cavity 131 presses the heated and softened glass blank to form the glass blank into the shape of the concave die cavity 131, namely a lens; after hot press molding, entering a cooling station, and cooling and shaping the mold and the molded lens; after accomplishing all processes, take out this mould from the hot pressing equipment to place the operation on the plane, take up slide block 2 earlier, shaping part 1 falls out from placing the hole below, then upwards takes up sleeve 12, and lens and briquetting 13 fall out from the below that holds chamber 121, by the bottom 11 bearing, after taking off briquetting 13 from the lens top, can accomplish the ejection of compact of lens.

Example two:

the difference between the second embodiment and the first embodiment is that the molding part 1 and the slide positioning block 2 are made of graphite.

Specifically, the graphite material has high hardness and good thermal conductivity, can endure higher temperature, and is suitable for the hot pressing process of the glass lens.

Example three:

the difference between the third embodiment and the first embodiment is that a protrusion 111 is disposed above the bottom cover 11 and is engaged with the lower opening of the accommodating cavity 121.

Specifically, the bump 111 can be in limit fit with the lower opening of the accommodating cavity 121, so that the bottom cover 11 and the sleeve 12 are prevented from sliding in the horizontal direction, and the glass blank is supported.

Example four:

the fourth embodiment is different from the first embodiment in that two placement holes 21 are symmetrically provided, and two placement holes 21 are provided in the molding portion 1.

Specifically, this mould is equipped with two shaping parts 1 through two holes 21 of placing that the symmetry set up, can process two glass material embryo at a hot pressing in-process, improves production efficiency, improves the utilization to heat energy.

Example five:

the difference between the fifth embodiment and the first embodiment is that a plurality of inclined grooves 22 are formed on the upper surface of the slide positioning block 2.

Specifically, the inclined groove 22 is communicated with the edge of the placing hole 21, so that when the pressing block 13 downwardly presses the glass blank in the hot pressing process, air inside the accommodating cavity 121 is discharged through the inclined groove 22, and an exhaust passage is formed.

What has been described herein is merely a preferred embodiment of the utility model, and the scope of the utility model is not limited thereto. Modifications, additions, or substitutions by those skilled in the art to the specific embodiments described herein are intended to be within the scope of the utility model.

Claims

1. A lens hot press molding die, comprising:

2. The mold for hot press molding of lens as claimed in claim 1, wherein the molding portion and the slide positioning block are made of graphite.

3. The mold for hot-press molding of lens as claimed in claim 1, wherein a protrusion is disposed above the bottom cover for engaging with the opening of the receiving cavity.

4. A lens hot-press molding die as claimed in claim 1, wherein the placing holes are symmetrically provided in two, and the molding portions are provided in two corresponding to the placing holes.

5. The mold for hot-press molding of lens as claimed in claim 1, wherein the slide positioning block has a plurality of inclined grooves on an upper surface thereof.