CN115519208A

CN115519208A - Packaging method for reducing insertion loss value of LENS pipe cap

Info

Publication number: CN115519208A
Application number: CN202211183551.7A
Authority: CN
Inventors: 勇智; 陶晓军
Original assignee: Hefei Zhuohua Intelligent Technology Co ltd
Current assignee: Hefei Zhuohua Intelligent Technology Co ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2022-12-27

Abstract

The invention discloses a packaging method for reducing the insertion loss value of a LENS tube cap, which comprises a limiting tool, wherein the limiting tool comprises a bottom plate and a tube shell limiting column, the tube shell limiting column is vertically arranged at the upper end of the bottom plate, and the upper end of the tube shell limiting column is provided with a LENS positioning groove matched with a LENS; the use steps of the limiting tool are as follows: s1: mounting a limiting tool on a processing platform; s2: inserting a lens to be packaged into the lens positioning groove and ensuring that the lens is tightly matched with the inner wall of the lens positioning groove; s3: and sleeving the tube shell to be packaged from the upper part of the lens, sleeving the tube shell on the outer side of the lens, and sleeving the tube shell on the outer side of the tube shell limiting column and continuously moving downwards until the tube shell moves downwards to the end. The invention has reasonable design and compact structure, effectively controls the offset angle between the lens and the end surface of the tube cap, effectively improves the packaging precision and the packaging quality of the tube cap, and effectively ensures the consistency of the packaging precision of products in batch production.

Description

Packaging method for reducing insertion loss value of LENS pipe cap

Technical Field

The invention relates to the technical field of optical device processing, in particular to a packaging method for reducing the insertion loss value of a LENS tube cap.

Background

In optical systems, insertion loss, which is the loss of a signal, usually referred to as attenuation, between a transmitter and a receiver, caused by insertion of a cable or element, is an important indicator of the performance of G-Lens/C-Lens.

When the tube cap is packaged, the lens and the tube shell are packaged through welding flux, the insertion loss value is obviously increased due to the fact that the offset angle between the lens and the end face of the tube cap is too large, and in order to ensure that the insertion loss value of the tube cap is low, the lens and the offset angle are optimally ensured to be lower than 0.5 degrees.

Among the present encapsulation mode, the uniformity of encapsulation precision can not be guaranteed on the one hand, and encapsulation quality is relatively poor, is unfavorable for the classification and the screening of product, and on the other hand also is convenient to fix a position lens and tube, and encapsulation precision is lower, again on the one hand also can not control the skew angle of lens and tube cap terminal surface, has increased the insertion loss value of tube cap.

Disclosure of Invention

The invention aims to solve the defects that the prior art is poor in accuracy consistency, low in packaging quality and packaging accuracy, cannot control the offset angle between a LENS and the end face of a tube cap and increases the insertion loss value of the tube cap, and provides a packaging method for reducing the insertion loss value of a LENS tube cap.

In order to achieve the purpose, the invention adopts the following technical scheme:

a packaging method for reducing the insertion loss value of a LENS tube cap is characterized in that a limiting tool is provided, the limiting tool comprises a bottom plate and a tube shell limiting column, the tube shell limiting column is vertically arranged at the upper end of the bottom plate, and a LENS positioning groove matched with a LENS is arranged at the upper end of the tube shell limiting column;

the use steps of the limiting tool are as follows:

s1: mounting a limiting tool on the machining platform;

s2: inserting a lens to be packaged into the lens positioning groove and ensuring that the lens is tightly matched with the inner wall of the lens positioning groove;

s3: sleeving a tube shell to be packaged from the upper part of the lens, sleeving the tube shell on the outer side of the lens, and sleeving the tube shell on the outer side of the tube shell limiting column and continuously moving downwards until the tube shell moves downwards to the bottom;

s4: laying the packaging solder in a solder groove which is arranged on the tube shell and corresponds to the lens;

s5: heating the solder to make the solder melt sufficiently and flow freely, and welding and packaging the tube shell and the lens;

s6: and cooling to solidify the solder, and taking down the tube shell from the tube shell limiting column after solidification to complete packaging.

Preferably, the operation sequence of S2 and S3 can be reversed, that is: the tube shell is sleeved on the tube cap limiting column, the lens is inserted into the tube shell from the upper side and is continuously inserted into the lens positioning groove downwards, the tube shell and the lens are guaranteed to move downwards to the end, and S4 and the subsequent steps are continuously carried out.

Preferably, the coaxiality of the pipe cap limiting column and the lens positioning groove is 0-0.02 mm.

Preferably, the verticality of the pipe cap limiting column and the lens positioning groove relative to the bottom plate is 0.003-0.01 mm.

Preferably, the flatness of the upper end face of the pipe shell limiting column is 0.005-0.02 mm/600mm multiplied by 600mm.

Preferably, the solder is low-temperature glass paste.

Preferably, a sleeve is further provided, a lens limiting hole and a tube shell positioning hole which are in through connection are arranged in the sleeve, the lens limiting hole penetrates through the top wall of the sleeve, and the tube shell positioning hole penetrates through the bottom wall of the sleeve.

More preferably, the coaxiality of the lens limiting hole and the tube shell positioning hole is 0-0.02 mm.

More preferably, after S4, the sleeve is sleeved on the outer sides of the tube shell and the lens, the lens limiting hole is sleeved on the outer side of the lens, the tube shell positioning hole is sleeved on the outer side of the tube shell, and S5 and S6 are continued after the sleeving is finished.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the coaxiality between the tube shell and the lens is controlled through the tube shell limiting column and the lens limiting hole, and the offset angle of the tube shell and the lens is effectively controlled, so that the packaging precision is ensured, and the insertion loss value of the tube cap is effectively reduced;

2. in the invention, the matching between the tube shell and the lens is further controlled at the outer side through the sleeve, so that the packaging precision is further improved, the precision is effectively controlled, and the consistency of the packaging precision is ensured;

3. in the invention, the sleeve also effectively protects the welding flux, ensures uniform packaging and welding, ensures the sealing effect of welding, and effectively ensures the welding quality and the attractive appearance of welding seams.

The invention has reasonable design and compact structure, effectively controls the offset angle between the lens and the end surface of the tube cap, effectively improves the packaging precision and the packaging quality of the tube cap, and effectively ensures the consistency of the packaging precision of products in batch production.

Drawings

FIG. 1 is a schematic diagram of an appearance structure of a packaging method for reducing the insertion loss value of a LENS cap according to the present invention;

fig. 2 is a schematic cross-sectional view of a packaging method for reducing LENS cap insertion loss according to the present invention.

In the figure: spacing frock 1, bottom plate 11, the spacing post of tube shell 2, sleeve pipe 3, the spacing hole 31 of lens, tube shell locating hole 32, tube shell a, lens b.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Example one

Referring to fig. 1 and 2, a packaging method for reducing the insertion loss value of a LENS tube cap provides a limiting tool 1, wherein the limiting tool 1 comprises a bottom plate 11 and a tube shell limiting column 2, the tube shell limiting column 2 is vertically arranged at the upper end of the bottom plate 11, and a LENS positioning groove 21 matched with a LENS is arranged at the upper end of the tube shell limiting column 2.

The use steps of the limiting tool 1 are as follows:

s1: install spacing frock 1 on the processing platform, the high plane degree platform that the processing platform can be made for optical platform or machine tooling, and a plurality of spacing frock 1 of mountable on the platform guarantee the processing effect.

S2: insert the lens b of waiting to encapsulate in lens constant head tank 21 to guarantee that lens b and lens constant head tank 21 inner wall closely cooperate, guarantee that lens b's vertical smooth inserting, the insertion process does not incline, avoids lens b not to touch the end, carries out high accuracy location to lens b through the cooperation between lens b and the lens constant head tank 21.

S3: the pipe shell a that will treat the encapsulation embolias from lens b top, makes pipe shell a suit in the lens b outside, and pipe shell a suit also needs to guarantee the smooth suit of pipe shell a on the spacing post 2 of pipe shell and moves down until moving down to the end simultaneously in the spacing post 2 outside of pipe shell, avoids the screens that the incline leads to between pipe shell a and the spacing post 2 of pipe shell, harms pipe shell a and frock easily on the one hand, influences follow-up use, and on the other hand can lead to pipe shell a not to place the quality reduction that leads to the pipe cap.

S4: the packaging solder is laid in the solder groove corresponding to the lens b on the tube shell a, the solder can be uniformly dispensed outside the lens b in a dispensing mode, the flowing of the solder during welding is facilitated, the attractiveness of a welding line is guaranteed, and the packaging effect is improved.

S5: the welding flux is heated to be fully melted and freely flows, the tube shell a and the lens b are welded and packaged, the welding flux is prevented from being directly blown by hot air during heating, and the welding and packaging effects are prevented from being influenced.

S6: the cooling makes the solder solidification, takes off tube a from spacing post 2 of tube and accomplishes the encapsulation after the solidification is accomplished, takes off the pipe cap from spacing frock at last, can set up heat abstractor in the processing platform below, and heat abstractor can be for forced air cooling or water-cooling heat dissipation, also can carry out whole cooling to a plurality of spacing frock 1 on the processing platform, also avoids the air current to directly blow the solder during the cooling, guarantees that the solder is pleasing to the eye and guarantees encapsulation quality.

In this embodiment, the coaxiality of the pipe cap limiting column 2 and the lens positioning groove 21 is 0-0.02 mm, so that the packaging offset angle between the pipe shell a and the lens b is ensured, and the packaging quality is ensured.

In this embodiment, the perpendicularity of the tube cap limiting column 2 and the lens positioning groove 21 with respect to the bottom plate 11 is 0.003-0.01 mm, and the positioning effect of the tube shell a is ensured under the condition that the lower end of the tube shell a is in contact with the bottom plate 11, so that the clamping position of the tube shell a is avoided.

In this embodiment, the flatness of the upper end surface of the tube spacing column 2 is 0.005-0.02 mm/600mm × 600mm, the upper end surface of the tube spacing column 2 is positioned in direct contact with the inner top wall of the tube a, the placement precision of the tube a is improved by ensuring the flatness of the tube spacing column 2, the packaging tolerance is reduced, and the packaging quality of the tube a and the lens b is ensured.

In this embodiment, the solder chooses low temperature glass slurry for use, makes things convenient for laying of solder on the one hand, and the mobile effect of solder when on the other hand guarantees the welding again on the one hand also guarantees the solidification that the solder can be faster when the cooling, improves encapsulation efficiency, also fixes the skew angle between tube housing a and the lens b, guarantees the quality of encapsulation.

Example two

Referring to fig. 1 and 2, in this embodiment, basically the same as the first embodiment, it is more preferable that the operation sequence of S2 and S3 can be reversed, that is: firstly, the tube shell a is sleeved on the tube cap limiting column 2, then the lens b is inserted into the tube shell a from the upper side and continuously inserted into the lens positioning groove 21 downwards, the tube shell a and the lens b are guaranteed to move downwards to the end, and S4 and subsequent steps are continuously performed.

EXAMPLE III

Referring to fig. 1 and 2, in this embodiment, basically the same as the first embodiment, it is more preferable that a sleeve 3 is further provided, a lens limiting hole 31 and a tube shell positioning hole 32 are arranged in the sleeve 3, the lens limiting hole 31 penetrates through the top wall of the sleeve 3, the tube shell positioning hole 32 penetrates through the bottom wall of the sleeve 3, and the tube shell a and the lens b are further limited at the outside during tube cap encapsulation, so as to further reduce the encapsulation tolerance and ensure the encapsulation effect of the tube shell a and the lens b.

In this embodiment, the coaxiality of the lens limiting hole 31 and the tube shell positioning hole 32 is 0-0.02 mm, so that the limiting precision of the tube shell a and the lens b is improved, the tube shell a and the lens b are limited on the outer side, the deviation of the tube shell a and the lens b is further avoided, and the packaging precision is improved.

In this embodiment, after the operation of S4 is completed, the sleeve 3 is sleeved on the outer sides of the tube shell a and the lens b, so that the lens limiting hole 31 is sleeved on the outer side of the lens b, the tube shell positioning hole 32 is sleeved on the outer side of the tube shell a, and S5 and S6 are continued after the completion of the sleeving.

Because the solder is laid in the solder groove, can not directly contact with sleeve pipe 3, can not cause the influence to the welding process, also protect the solder simultaneously, make the solder can not blown by the air current and lead to welding inhomogeneous, improve welding quality and the pleasing to the eye of welding seam, also provide probably for the mode of multiple heating and cooling, take off sleeve pipe and pipe cap in proper order after the encapsulation is accomplished and accomplish the encapsulation promptly.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A packaging method for reducing the insertion loss value of a LENS tube cap is characterized in that a limiting tool is provided, the limiting tool comprises a bottom plate and a tube shell limiting column, the tube shell limiting column is vertically arranged at the upper end of the bottom plate, and a LENS positioning groove matched with a LENS is formed in the upper end of the tube shell limiting column;

the use steps of the limiting tool are as follows:

s1: mounting a limiting tool on a processing platform;

s5: heating the solder to make the solder fully melt and freely flow, and packaging the tube shell and the lens;

s6: and cooling to solidify the welding flux, taking down the tube shell from the tube shell limiting column to complete encapsulation after solidification, and finally taking down the tube cap from the limiting tool.

2. The packaging method for reducing LENS cap insertion loss according to claim 1, wherein the S2 and S3 can reverse the operation sequence, that is: the tube shell is sleeved on the tube cap limiting column, the lens is inserted into the tube shell from the upper side and is continuously inserted into the lens positioning groove downwards, and the tube shell and the lens are guaranteed to move downwards to the end.

3. The packaging method for reducing the LENS cap insertion loss value of the LENS of claim 1, wherein the coaxiality of the cap retainer post and the LENS positioning groove is 0-0.02 mm.

4. The packaging method for reducing LENS cap insertion loss according to claim 1, wherein the perpendicularity of the cap retainer post and the LENS positioning groove with respect to the bottom plate is 0.003-0.01 mm.

5. The packaging method for reducing the insertion loss value of the LENS cap of claim 1, wherein the flatness of the upper end face of the limiting column of the tube shell is 0.005-0.02 mm/600mm x 600mm.

6. The packaging method for reducing LENS cap insertion loss according to claim 1, wherein said solder is a low temperature glass paste.

7. The packaging method for reducing the LENS cap insertion loss value of LENS as claimed in claim 1, wherein a sleeve is further provided, said sleeve is provided with a LENS limiting hole and a tube shell positioning hole, said LENS limiting hole penetrates through the top wall of the sleeve, and said tube shell positioning hole penetrates through the bottom wall of the sleeve.

8. The packaging method for reducing the insertion loss value of the LENS cap of claim 7, wherein the coaxiality of the LENS limiting hole and the tube shell positioning hole is 0-0.02 mm.

9. The packaging method for reducing the insertion loss value of the LENS cap of the LENS as claimed in claim 1 or 7, wherein after the operation of S4, the sleeve is sleeved on the outer sides of the tube shell and the LENS, so that the LENS limiting hole and the tube shell positioning hole are respectively sleeved on the outer sides of the LENS and the tube shell, and after the completion of the sleeving, S5 and S6 are continued.