CN111825306A

CN111825306A - One-step compression molding process for optical communication element

Info

Publication number: CN111825306A
Application number: CN202010721844.0A
Authority: CN
Inventors: 姜绪木; 白宇轩; 谢飞; 舒晓林; 王杰
Original assignee: Mdtp Optics Co ltd
Current assignee: Mdtp Optics Co ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2020-10-27

Abstract

The invention discloses a one-step compression molding process method of an optical communication element, which increases a trapezoidal boss on the inner wall of an inner hole of a pipe cap by changing the original structural design, designs a step matched with the inner hole of the pipe cap on the lower mold of a mold, places the pipe cap on the mold when molding a lens, and directly presses the lens in the pipe cap for one-step molding.

Description

One-step compression molding process for optical communication element

Technical Field

The invention relates to the field of optical glass, in particular to a one-time compression molding process method for an optical communication element.

Background

At present, the main process flow of the optical communication element is as follows: manufacturing a welding ring → manufacturing a pipe cap → manufacturing a lens → welding the three parts, the process has high cost, and glass welding rings and glass are required to be manufactured.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a one-time compression molding process method for an optical communication element, and the invention does not need a welding ring or welding, thereby reducing the cost and quickening the delivery period.

The technical scheme adopted by the invention is as follows: a one-time compression molding process method of an optical communication element comprises the following steps:

s1, designing a forming pipe cap, adding a trapezoidal boss or a groove on the inner wall of an inner hole of the pipe cap, adding a boss on the inner wall of the inner hole of the pipe cap for a lens with a larger forming diameter, adding a groove on the inner wall of the inner hole of the pipe cap for a lens with a smaller forming diameter, wherein the boss or the groove can ensure that the lens is firmly fixed in the pipe cap, can bear pressure and ensure air tightness, the height of the boss or the depth of the groove is controlled to be 0.05mm, too high can cause the filling of the lens to be not full during mould pressing, too low can cause the bearing capacity of the lens to be reduced, and the boss or the groove is arranged at the middle position in the thickness direction of the lens and can avoid the filling of;

s2, designing a forming die, designing a step matched with an inner hole of the pipe cap on the lower die of the die, controlling the minimum matching clearance between the step and the inner hole of the pipe cap to be 0.15mm, easily causing the pipe cap to be clamped on the lower die and difficult to take down when the clearance is too small, and causing the upper die not to be inserted into the pipe cap when the clearance is too large;

s3, preparing a lens raw material, a mould and a pipe cap;

s4, assembling the lens raw material, the upper and lower molds of the mold and the pipe cap together, putting the lens and the pipe cap into a molding press, heating the lens and the pipe cap to a Ts point of glass, namely 582 ℃, after multi-stage preheating, carrying out compression molding, and then carrying out multi-stage cooling.

Preferably, the cap is formed integrally with the lens after molding.

Preferably, trapezoidal bosses or grooves on the interior of the cap hold the lens and are integral therewith.

Preferably, the inner hole of the pipe cap is two-section type, and the trapezoidal step or the groove is arranged at the inner hole at one end with smaller hole diameter.

The invention has the beneficial effects that: the invention increases the ladder-shaped step on the inner wall of the inner hole of the pipe cap by changing the original structural design, designs a boss matched with the inner hole of the pipe cap on the lower die of the die, places the pipe cap on the die when the lens is molded, and the lens is directly pressed in the pipe cap for one-step molding.

Drawings

FIG. 1 is a schematic assembly view of the present invention;

FIG. 2 is a schematic view of the interior of the inventive tube cap with a trapezoidal boss;

fig. 3 is a schematic view of the interior of the inventive cap with trapezoidal grooves.

In the figure: 1. a pipe cap; 2. a lens; 3. molding on a mold; 4. molding the die; 5. a boss; 6. and (4) a groove.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be understood that the terms "mounted," "connected," and "connected" are used broadly and can be, for example, mechanically or electrically connected, or can be internal to two elements, directly connected, or indirectly connected through an intermediate medium. The specific meaning of the above terms can be understood by those of ordinary skill in the art as appropriate.

As shown in the figure, the one-time compression molding process method of the optical communication element comprises the following steps:

s3, preparing a lens raw material, a mould and a pipe cap;

Preferably, the cap is formed integrally with the lens after molding.

In the description herein, references to the description of "one embodiment," "an example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A one-time compression molding process method for optical communication elements is characterized by comprising the following steps:

s1, designing a forming pipe cap, adding a trapezoidal boss or a groove on the inner wall of an inner hole of the pipe cap, adding a boss on the inner wall of the inner hole of the pipe cap for forming a lens with a larger diameter, adding a groove on the inner wall of the inner hole of the pipe cap for forming a lens with a smaller diameter, controlling the height of the boss or the depth of the groove to be 0.05mm, and arranging the boss or the groove at the middle position in the thickness direction of the lens;

s3, preparing a lens raw material, a mould and a pipe cap;

2. The method of claim 1, wherein the cap is integrally formed with the lens after molding.

3. The method of claim 2, wherein the trapezoidal boss or groove on the interior of the cap retains the lens and is integral therewith.

4. The method of claim 1, wherein the inner bore of the interior of the cap is two-segmented and the step or groove is formed at the inner bore at the end having the smaller diameter.