CN216039226U - One-mould multi-cavity lens hot-pressing forming mould - Google Patents

Abstract

The utility model discloses a hot-press forming die for a lens with multiple cavities in one die, which comprises: the die cavity comprises an arc-shaped concave part and a straight concave part, and the arc-shaped concave part is arranged below the straight concave part; the die comprises an upper die, wherein a convex die block matched with the concave die cavity is arranged below the upper die, the convex die block comprises an arc-shaped convex part and a straight convex part, and the arc-shaped convex part is arranged below the straight convex part. 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 a plurality of glass material blanks simultaneously and has high production efficiency.

Description

One-mould multi-cavity lens hot-pressing forming mould

Technical Field

The utility model belongs to the field of lens production equipment, and particularly relates to a one-mold multi-cavity lens hot-pressing forming mold.

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 one-mold multi-cavity lens hot-press molding die comprising:

the die cavity comprises an arc-shaped concave part and a straight concave part, and the arc-shaped concave part is arranged below the straight concave part;

the die comprises an upper die, wherein a convex die block matched with the concave die cavity is arranged below the upper die, the convex die block comprises an arc-shaped convex part and a straight convex part, and the arc-shaped convex part is arranged below the straight convex part.

Furthermore, the lower die and the upper die are both made of graphite materials.

Furthermore, flanges which are symmetrically arranged are arranged below two sides of the upper die.

Furthermore, the two ends of each flange are provided with positioning blocks, and the four corners of the lower die are provided with positioning notches matched with the positioning blocks.

Further, a bottom plate is arranged below the lower die.

Furthermore, an exhaust groove communicated with the upper surface of the lower die is arranged between the vertically arranged cavity dies.

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 a plurality of 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 the interior of the upper die;

FIG. 3 is a schematic sectional view of the present mold;

referring to fig. 1-3, wherein: 1. a lower die; 11. a cavity; 111. an arc-shaped concave part; 112. a straight recess; 12. positioning the notch; 13. a base plate; 14. an exhaust groove; 2. an upper die; 21. a male module; 211. an arc-shaped convex part; 212. a straight convex portion; 22. blocking edges; 221. and (5) positioning the blocks.

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 one-mold multi-cavity lens hot-press molding die comprising:

the die comprises a lower die 1, wherein a plurality of uniformly distributed die cavities 11 are arranged above the lower die 1, each die cavity 11 comprises an arc-shaped concave part 111 and a straight concave part 112, and the arc-shaped concave parts 111 are arranged below the straight concave parts 112;

go up mould 2, it is equipped with the boss piece 21 that matches with die cavity 11 to go up mould 2 below, boss piece 21 includes arc convex part 211 and straight convex part 212, arc convex part 211 sets up in straight convex part 212 below.

Specifically, the die is matched with production line type hot-pressing equipment for use; when in use, firstly, a glass blank is placed into the female die cavity 11, the upper die 2 and the lower die 1 are closed from the upper part, the convex die block 21 presses the glass blank, and then the die can be placed into hot-pressing equipment for hot-pressing forming; during molding, the mold is firstly positioned at a preheating station, the temperature of the glass blank in the female mold cavity 11 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, the hot-pressing equipment moves the mold to a hot-pressing station, a pressure mechanism presses the upper mold 2 downwards from the upper part, the convex mold block 21 presses the glass blank downwards and towards the concave mold cavity 11, the softened glass blank is gradually deformed and fits the outlines of the concave mold cavity 11 and the convex mold block 21, the arc concave part 111 is matched with the arc convex part 211, the glass blank is formed into a main body part in the middle of the lens, and the straight concave part 112 is matched with the straight convex part 212, so that the glass blank is formed into a blank pressing part on the edge of the lens; after hot press molding, entering a cooling station, and cooling and shaping the mold and the molded lens; after all the working procedures are finished, the die is taken out of the hot-pressing equipment, the upper die 2 is upwards taken up, and the formed lens can be taken out of the female die cavity 111 to finish the discharging of the lens.

Example two:

the difference between the second embodiment and the first embodiment is that the lower die 1 and the upper die 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 the upper mold 2 is provided with symmetrically arranged flanges 22 at the lower parts of both sides.

The two ends of the flange 22 are respectively provided with a positioning block 221, and the four corners of the lower die 1 are provided with positioning notches 12 matched with the positioning blocks 221.

Specifically, when last mould 2 and lower mould 1 compound die, the inner wall of flange 22 and the side laminating of lower mould 1 for go up mould 2 and can not control in the horizontal direction and slide, locating piece 221 and the cooperation of location breach 12 prevent to go up mould 2 and slide around on the horizontal direction simultaneously, all have the cooperation of locating piece 221 and location breach 13 on four angles of this mould, can prevent to go up mould 2 and take place to incline pushing down the in-process, guarantee to go up mould 2 and push down with the vertically movement track.

Example four:

the difference between the fourth embodiment and the third embodiment is that a bottom plate 13 is arranged below the lower die 1.

Specifically, the bottom plate 13 can increase the contact area of the lower mold 1, prevent the lower edge of the positioning notch 12 from being collided with in the moving process, and can also support the lower part of the flange 22.

Example five:

the difference between the fifth embodiment and the first embodiment is that a vent groove 14 is arranged on the upper surface of the lower die 1 and communicated between the vertically arranged die cavities 11.

Specifically, the air discharge groove 14 is communicated with the edge of the cavity 11 and the edge of the lower mold 1, so that air in the cavity 11 can be discharged out of the lower mold through the air discharge groove 14 when the male mold block 21 downwardly extrudes the glass blank in the hot pressing process.

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 (6)

1. A one-mold multi-cavity lens hot-press molding die, comprising:

the die cavity comprises an arc-shaped concave part and a straight concave part, and the arc-shaped concave part is arranged below the straight concave part;

the die comprises an upper die, wherein a convex die block matched with the concave die cavity is arranged below the upper die, the convex die block comprises an arc-shaped convex part and a straight convex part, and the arc-shaped convex part is arranged below the straight convex part.

2. The mold for hot-press molding a lens having multiple cavities according to claim 1, wherein the lower mold and the upper mold are made of graphite.

3. The mold for hot-press molding a multi-cavity lens as claimed in claim 1, wherein the upper mold has symmetrically disposed ribs at both sides thereof.

4. The mold for hot-press molding of a lens having multiple cavities according to claim 3, wherein the flanges are provided at both ends thereof with positioning blocks, and the lower mold is provided at four corners thereof with positioning notches matching with the positioning blocks.

5. The mold for hot-press molding a multi-cavity lens as claimed in claim 1, wherein a bottom plate is provided under the lower mold.

6. The mold for hot-press molding a lens having multiple cavities according to claim 1, wherein the upper surface of the lower mold has venting grooves communicating between the vertically arranged cavities.

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