Coupling tail fiber visual inspection packaging box

Abstract

The embodiment of the utility model provides a coupling tail fiber visual inspection packaging box which comprises an upper cover, an inner support and a bottom support. The upper cover is buckled and connected with the bottom support, a cavity is formed in the upper cover, and the inner support is arranged in the cavity; the inner support is provided with at least one protruding platform which is away from the upper cover by a preset distance and is used for placing an insertion core. A groove with a preset height is formed in the inner support and is used for accommodating an optical fiber; at least one plane is arranged at the front position of the protruding platform and serves as a datum plane, and a sticky sheet used for fixing a product to be detected is arranged on the plane. The detection accuracy and efficiency can be improved, accurate observation of product features and rejection of defective products are facilitated, detection interference is reduced, the risk of product damage can be reduced, batch transportation and management are facilitated, products are placed more orderly, and the whole device has good application value and market prospects.

Description

TECHNICAL FIELD

[0001] The utility model relates to coupling tail fiber detection technical field, especially to a kind of coupling tail fiber visual inspection packaging box. BACKGROUND

[0002] The novel semiconductor laser coupled tail fiber of optical fiber convex structure (CN201820743745) solves the problem of high-power film layer cracking caused by different thermal expansion coefficients of the substrate. Although its process is slightly more complex than the plane grinding design, it has high reliability and has been recognized by the market in the past decade. High-power laser requires the use of various detection equipment, such as microscopes, end detectors, etc. The detection part takes a lot of time. The difficulty of affecting detection efficiency is switching fixtures, three-dimensional adjustment and alignment, and detection efficiency is more dependent on the proficiency of visual inspectors.

[0003] A new type of packaging box (CN208248965U) better solves the problem of packaging and whole-row visual inspection of bare optical fiber series products after coating processing, and it is easy to remove products with poor smoothness during detection. However, this scheme is not suitable for coupling tail fibers with ferrules (or capillaries, same below), because it is fixed on the optical fiber part, and the front end of the heavy ferrule is suspended and extended outward, which is difficult to avoid shaking, which cannot be detected and is not conducive to transportation. Therefore, the present application provides a coupling tail fiber visual inspection packaging box to at least partially solve the above problems. SUMMARY

[0004] In view of the above problems, the utility model is proposed to provide a coupling tail fiber visual inspection packaging box to overcome the above problems or at least partially solve the above problems, comprising:

[0005] A coupling tail fiber visual inspection packaging box, comprising: an upper cover, an inner support and a bottom support; the upper cover is connected with the bottom support by buckling, and a cavity is formed inside; the inner support is arranged in the cavity;

[0006] The inner support is provided with at least one raised platform at a predetermined distance from the upper cover for placing the ferrule; the inner support is provided with a recess of a predetermined height for accommodating the optical fiber;

[0007] The raised platform is provided with at least one plane as a reference surface at the front position, and the plane is provided with an adhesive sheet for fixing the product to be detected.

[0008] Optionally, the plane extends to the front end, and the rear end of the plane is provided with a notch to form a stepped groove for placing the ferrule.

[0009] Optionally, the raised platform comprises: a first platform and a second platform arranged in parallel;

[0010] The first platform and the second platform are provided with same stepped grooves arranged in horizontal direction.

[0011] Optionally, the bottom support and the upper cover are respectively provided with first and second buckles capable of being engaged with each other.

[0012] Optionally, the bottom support and the upper cover are respectively provided with a clearance chamfer at a corresponding corner.

[0013] Optionally, the first buckle is provided with a first notch at a bottom end position;

[0014] The second buckle is also provided with a second notch at a bottom end position;

[0015] And the first notch and the second notch are staggered.

[0016] Optionally, the upper cover, the inner support and the bottom support are made of resin sheet material or PET sheet material or PP sheet material, and the thickness is 0.6-1.5mm.

[0017] Optionally, the distance between the convex platform and the upper cover is 1.25mm-2.5mm.

[0018] Optionally, the plug core is a ceramic plug core.

[0019] The embodiment of the utility model has the following advantages:

[0020] In the embodiment of the utility model, through upper cover, inner support and bottom support, the upper cover is connected with the bottom support, and a cavity is formed in the inside, the inner support is arranged in the cavity, the inner support is provided with at least one convex platform with a preset distance from the upper cover, and is used for placing the plug core, the inner support is provided with a groove with a preset height, and is used for accommodating the optical fiber, the convex platform is provided with at least one plane at a front position, and the plane is used as a reference surface, and the plane is provided with an adhesive sheet material for fixing the product to be detected. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the utility model, the following will be briefly introduced the drawings needed to be used in the description of the utility model, and obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can be obtained according to the drawings without paying the creative labor.

[0022] Figure 1is a coupling tail fiber inspection packaging box coupling tail fiber schematic diagram of the embodiment of the utility model provides;

[0023] Figure 2 is the inner to structure and the appointment direction schematic diagram of the embodiment of the utility model provides a kind of coupling tail fiber inspection packaging box;

[0024] Figure 3 is the limiting structure schematic diagram of the embodiment of the utility model provides a kind of coupling tail fiber inspection packaging box;

[0025] Figure 4 is the adhesive sheet and upper cover bonding structure schematic diagram of the embodiment of the utility model provides a kind of coupling tail fiber inspection packaging box;

[0026] Figure 5 is the overall packaging schematic diagram of the embodiment of the utility model provides a kind of coupling tail fiber inspection packaging box;

[0027] Figure 6 is the packaging operation method schematic diagram of the embodiment of the utility model provides a kind of coupling tail fiber inspection packaging box;

[0028] Figure 7 is the end inspection instrument flange of sleeve structure in prior art section view;

[0029] Figure 8 is the inspection method schematic diagram of the embodiment of the utility model provides a kind of coupling tail fiber inspection packaging box.

[0030] Explanation of figure mark:

[0031] Reference Name Reference Name Reference Name 10 Optical fiber 102 Optical fiber head region 302 First catch 11 Ferrule 103 Optical fiber arm region 303 First notch 20 Inner tray 104 Optical fiber winding region 401 Window 21 Adhesive sheet 201 Front surface 402 Second catch 30 Bottom tray 202 First platform 403 Second notch 40 Upper cover 203 Stepped groove 501 Ceramic bushing 50 Flange 204 Second platform 502 Step 60 Objective lens 205 Groove 101 Optical fiber protrusion region 301 Cavity Specific embodiments

[0032] To make the above purpose, features and advantages of the utility model more obvious and easy to understand, the utility model is further explained in detail with the drawings and specific embodiments below.Obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments.Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor are within the scope of the utility model protection.

[0033] Reference Figure 1, the utility model discloses a kind of coupling tail fiber visual inspection packaging boxes provided by an embodiment, specifically can include: upper cover 40, inner support 20 and bottom support 30;The upper cover 40 is connected with the bottom support 30 buckle, its inside forms a cavity 301, the inner support 20 is set in the cavity 301;The inner support 20 is equipped with at least one protruding platform with the upper cover 40 apart from preset distance, for placing ferrule 11;The inner support 20 is equipped with the recess 205 of preset height, for accommodating optical fiber 10;The protruding platform is at least provided with a plane at front position, as reference surface, the plane is provided with the adhesive sheet material for fixing product to be inspected.

[0034] In the embodiment, through the coupling tail fiber visual inspection packaging box described above, the problem that the front end ferrule is suspended and extended outward, which can cause shaking and affect detection and transportation, is solved by fixing the optical fiber part, specifically, at least one protruding platform apart from the upper cover 40 by a preset distance is arranged on the inner support 20, which is specially used for placing the ferrule 11. The existing technology only fixes the optical fiber 10, leaving the ferrule 11 suspended, which is avoided, so that the ferrule 11 has a special placement position, avoiding the suspended and extended state without support, fundamentally solving the problem of shaking caused by the suspended ferrule, and creating good conditions for subsequent stable detection and transportation. At least one plane is provided as a reference surface at the front position of the protruding platform, and an adhesive sheet material for fixing the product to be inspected is arranged on the plane. The ferrule 11 and the coupling tail fiber can be better fixed on the protruding platform by the adhesive sheet material, further enhancing the stability of product placement, preventing displacement of the product during detection and transportation, and ensuring the relative fixation of the product state during the whole process, which is beneficial for accurate visual inspection and avoids product damage caused by shaking and other adverse transportation conditions.

[0035] In addition, the inner support 20 is provided with a recess 205 of preset height for accommodating the optical fiber 10, so that the optical fiber 10 part can also be placed reasonably and orderly, cooperating with the placement of the ferrule 11 on the protruding platform, so that the whole coupling tail fiber product can be completely and stably placed in the packaging box, solving the series of problems caused by unreasonable fixation before.

[0036] In the present application, the new coupling tail fiber visual inspection packaging box has the following advantages: in terms of detection, it can improve detection accuracy and efficiency, facilitate precise observation of product features, eliminate defective products, and reduce detection interference; in terms of transportation, it can reduce the risk of product damage, facilitate batch transportation and management, and place products more neatly and orderly, with good application value and market prospect.

[0037] As an example, the utility model provides a pigtail packing box, including upper cover 40, inner support 20, bottom support 30, all feature structure is mould injection, hot pressing or vacuum suction forming. Upper cover 40 and bottom support 30 buckle after the above, form a space (or called cavity) in the inside, for placing inner support 20. Inner support 20 is equipped with at least one convex platform, for placing the ferrule 11 part of coupling pigtail. When the whole set of packing buckles, the distance between the convex platform and upper cover 40 can be 1.25mm, 1.6mm or 2.5mm etc. typical value, depending on the ferrule model. The above platform is equipped with at least one plane in front position, as reference surface. The plane uses adhesive sheet to fix the product to be inspected.

[0038] In a specific example, as shown in Figure 1 Common coupling pigtail is composed of optical fiber 10 and ferrule 11 (or capillary tube). The overall structure can be divided into four areas: optical fiber protruding area 101, optical fiber head area 102, optical fiber arm area 103, and optical fiber winding area 104. More specifically, when the optical fiber 10 is a model 105 / 125 optical fiber, the cladding diameter is 125 μm, and at this time, the radius of the optical fiber winding area 104 is usually 20 mm (estimated according to the 150-200 times of the cladding diameter of the long-term fiber winding radius). The length of the optical fiber protruding area 101 is usually 1-5 mm. The length of the ferrule 11 is usually 6-10.5 mm, and the material is usually copper, stainless steel, aluminum oxide, zirconium oxide, etc.

[0039] For ease of illustration, as shown in Figure 2 A coordinate system is agreed, with X as left and right, Y as front and back, Z as up and down, and θ angle as the angle of placement.

[0040] As shown in Figure 2 and Figure 3 The cylindrical optical fiber 10 is in linear contact with the reference plane to ensure the consistency of the Z-direction optical fiber end face position, and the side edge of the ferrule is used for positioning for about 2 / 3 of the length (about 4-6 mm) to ensure that the θ angle is as small as possible, avoiding repeated switching of the fixture. This greatly reduces the risk of excessive bending of the optical fiber 10 at the glue joint during visual inspection, end face contamination, and breakage. It also makes the structure uniform, economical and practical, convenient and fast. The position consistency of the optical fiber 10 end face is high, easy for machine automatic recognition, and improves the detection efficiency.

[0041] In an embodiment of the utility model, the plane extends to the front end, and the rear end of the plane is provided with a notch to form a stepped groove 203 for placing the ferrule 11. The plane can be extended forward to facilitate automatic adhesion of the adhesive sheet. The plane is provided with a notch at the rear to form a stepped groove 203 for placing the ferrule 11, the two side edges of the stepped groove 203 limit the ferrule 11 left and right, and the rear side of the stepped groove 203 limits the ferrule 11 front and back.

[0042] In an embodiment of the utility model, the convex platform includes: first platform 202 and second platform 204 arranged in parallel, and the first platform 202 and the second platform 204 are provided with same stepped groove 203 arranged in horizontal direction. The stepped groove 203 is arranged in horizontal direction, and multiple stepped grooves 203 are arranged on the convex platform, and the specific interval distance and quantity are based on the product taking out.

[0043] Particularly, when the interval is reduced to zero, that is, the stepped groove 203 is cancelled, the pigtail is adjacent to each other, at this time, the maximum number of loading can be achieved, but it is not conducive to manual operation. The second platform 204 is arranged behind the first platform 202, at least one limiting groove is arranged on the platform, the two side edges limit the rear section of the optical fiber 10, and are used for assisting manual positioning. A larger sink (groove 205) is arranged behind the limiting groove, and is used for placing the coiled part of the coupling pigtail. The depth is determined by the height when the optical fiber 10 is stacked, the front-back width is determined by the minimum long-term coiling radius of the optical fiber 10, and the left-right width is determined by the designed installation quantity.

[0044] In a specific example, the packaging box mechanism has six functional areas: the front surface 201 of the inner support 20 is basically flush with the optical fiber convex area 101; the first platform 202 provides a horizontal positioning reference; the two side edges of the stepped groove 203 limit the ferrule 11 left and right, and the rear side of the stepped groove 203 limits the ferrule 11 front and back; the second platform 204 is used for fixing the optical fiber arm area 103, and the groove 205 is used for placing the optical fiber coiling area 104.

[0045] Further, referring to Figure 3 The enlarged view of the inner support 20 limiting structure is shown, in the above-mentioned reference plane, the first platform 202 provides a flat surface as a positioning reference. The stepped groove 203 provides a positioning reference in Y direction. The ferrule 11 has been precisely machined and detected, and the micro-hole circle runout (commonly known as coaxiality) can generally reach 0.01mm, so it is only necessary to ensure that the first platform 202 is not concave and deformed in actual production, and the placing angle θ is small enough, so that a flat arrangement and a high position consistency of the optical fiber end surface can be obtained, and the subsequent machine automatic recognition is easy, and the detection efficiency is improved.

[0046] Referring to Figure 4 The contact position of the good product packaging inner coupling pigtail ferrule 11 and other structures is shown, during the detection completion to the delivery transportation process, the ferrule 11 is well fixed, so as to reduce the loosening risk caused by the decrease of the adhesion of the adhesive sheet 21 when the temperature rises.

[0047] In addition, the second platform 204 can adopt anti-static foam clamping fiber arm 103 area, such as EVA material, PU material and the like, but the first platform 202 is not suitable to use the foam scheme.From the production principle, the foaming material inevitably produces small particles, if the production environment cleanliness is poor, the foam will always adsorb small dust.

[0048] In an embodiment of the utility model, as shown in Figure 5 As shown, the first buckle 302 and the second buckle 402 that can mutually engage are respectively arranged at the four corners of the bottom support 30 and the upper cover 40, and are used for engaging and fixing.

[0049] Further, the two buckles facing the operator use staggered design, facilitating the actual operation of opening the cover with both hands; the upper cover 40, the inner support 20 and the bottom support 30 are all resin sheets, PET sheets or PP sheets, and the thickness is 0.6-1.5 mm.

[0050] In an example, the bottom end position of the first buckle 302 is provided with a first gap 303; the bottom end position of the second buckle 402 is also provided with a second gap 403; and the first gap 303 and the second gap 403 are staggered. The second gap 403 (upper cover 40 staggered gap) and the first gap 303 (bottom support 30 staggered gap) facilitate the actual operation of opening the upper cover with the right thumb and pressing the bottom support with the left thumb.

[0051] Referring to Figure 5As shown, the upper cover 40 and the bottom support 30 mainly form a three-dimensional space 301 (or a cavity) for placing the inner support 20. The contact features of the upper cover 40 and the bottom support 30 serve to buffer and protect each other, support each other, and improve the structural rigidity. The buckle structure 402 around the upper cover 40 is engaged with the buckle structure 302 around the bottom support 30. The upper cover 40 is provided with a window 401, which is located at the upper end of the ferrule 11. When testing, the ferrule 11 can be pulled out from the window 401. The second notch 403 of the upper cover 40 and the first notch 303 of the bottom support facilitate the opening of the upper cover by the right thumb and the pressing of the bottom support by the left thumb during actual operation. The recess 205 is provided with a buffer layer, which is preferably 1-3 mm foamed sponge, so as to prevent the optical fiber 10 from shaking in the packaging box and reduce the risk of the optical fiber winding area 104 being scattered during transportation. Preferably, the buffer layer is made of resin, PVC, PET, PP sheet with a thickness of 0.6-2 mm, or a multi-layer composite material to improve the strength. Since the shrinkage rates of sheets with different thicknesses are different, the radii of the fillets formed by the microstructures also differ. Further, the sheet is preferably transparent or black, and an anti-static material should be added to the raw material or an anti-static film should be covered on the surface to ensure that the resistance value of the material is between 1E5Ω and 1E12Ω, so as to reduce the risk of potential electrostatic adsorption (ESA).

[0052] In an embodiment of the utility model, the distance between the convex platform and the upper cover 40 is 1.25mm-2.5mm;The inner support 20 is provided with at least one convex platform for placing the ferrule part of the coupling tail fiber. When the whole package is buckled, the distance between the convex platform and the upper cover 40 can be 1.25mm or 1.6mm or 2.5mm, etc. The specific value depends on the model of the ferrule. The ferrule 11 is preferably a ceramic ferrule. The ceramic ferrule has high precision characteristics, which can realize accurate positioning of the optical fiber, effectively reduce the optical signal transmission loss;Good optical performance ensures high optical transmittance and stable refractive index in the communication waveband, reduces reflection and echo loss;Good chemical stability, resistant to various chemical substances, ensure long-term stable operation;Good mechanical properties, high compressive strength and good wear resistance, can withstand the plug-in pressure and friction.

[0053] In an embodiment of the utility model, a kind of coupling tail fiber visual inspection packaging method is also disclosed, comprising:

[0054] Connect several optical fibers with several ferrules respectively, and remove the upper cover 40 from the bottom support 30, so that the inner support is completely exposed;

[0055] The ferrule is fixed to the adhesive sheet of the inner support, and the optical fiber connected to the rear end of the ferrule is arranged in the recess 205 of the inner support;

[0056] The ferrule 11 is aligned and visually inspected in sequence by the optical fiber detector.

[0057] The tail fiber packaging method and the visual inspection method have the advantages that, compared with the traditional end inspection instrument flange, the two sides are limited and fixed backward through a stepped groove 203, avoiding the risk of collision and breakage; the whole row visual inspection method is used instead of the original single visual inspection method, the work efficiency is high, the visual inspection accuracy can meet the batch requirement, and the image recognition is easy to realize automatic detection.

[0058] Further, the ceramic ferrule part can be clamped by tweezers instead of the optical fiber part, avoiding large-angle bending and pulling of the optical fiber, especially avoiding excessive bending of the optical fiber at the glue dispensing position during manual operation, which is particularly critical. Each inner support can be regarded as a tray unit, and after visual inspection, the whole tray is loaded into the box, and when the customer performs incoming inspection, the whole tray is taken out, reducing the risk of contamination during receipt inspection, and keeping the outgoing product inspection consistent with the customer's receipt product control.

[0059] In a specific example, as shown in Figure 6 First, replace the new adhesive sheet 21 on the first platform 202, and make sure it is tightly attached without air bubbles. The operator first focuses on the optical fiber head area 102, clamps the ceramic ferrule 11 with tweezers, and gently places it on the first platform 202. At this time, the ceramic ferrule 11 has not yet adhered to the adhesive sheet 21, and the tweezers are used to gently lift it while manually pulling the optical fiber arm area 103 backward. The tweezers are used again to adjust the placement angle of the ceramic ferrule 11 so that it leans against one side of the stepped groove 203 until the ferrule 11 contacts the rear limiting step of the stepped groove 203. At this time, the tweezers are used to press the ferrule 11 against the adhesive sheet, and the thumb and index finger are used to smooth the optical fiber arm 103, applying a pre-tightening force to make it slightly straight, and then pressing it against the adhesive sheet at the second platform 204.

[0060] Compared with the existing end inspection instrument which is usually a flange structure, as shown in Figure 7 The ferrule 11 cooperates with the matching flange 50, and there is a ceramic bushing 501 in the hole to make the cooperation tight and wear-resistant. The traditional method uses forward positioning, that is, relying on the step 502 to limit the distance from the objective lens 60. Although this sleeve scheme has the advantage of no need for mechanical adjustment structure and good repeatability, the risk of collision during operation is larger, and it is not suitable for convex coupling tail fibers.

[0061] Referring to Figure 8As shown, in the present application, the tray is used to realize more accurate positioning, replacing the forward positioning method, and avoiding the risk of colliding with the dirty and breaking caused by the flange adapter. The line contact positioning of the cylinder and the reference plane ensures the consistency of the Z direction fiber end face position, the side edge positioning of about 2 / 3 length (4-6mm) of the ferrule 11 ensures that the θ angle is as small as possible, avoids repeated switching of the clamp, realizes the unity of the coupling tail fiber detection and packaging, and is economical, practical, convenient and fast. The inspector pulls back when loading, without the need to wear the flange, greatly reducing the risk of excessive bending of the fiber at the point of the joint, and the end face colliding with the dirty and breaking when the operator is operating.

[0062] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to these embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0063] Finally, it should also be noted that in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or terminal device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or terminal device including the element.

[0064] The above describes a coupling tail fiber visual inspection packaging box provided by the present application in detail, and the principle and implementation mode of the present application are described in this paper. The above description of the embodiments is only used to help understand the method and core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description should not be understood as a limitation of the present application.

Claims

1. A coupling tail fiber visual inspection packaging box, characterized in that, The utility model relates to a kind of optical fiber inspection device, including: Upper cover, inner support and bottom support; The upper cover is connected with the bottom support snap, and its inside forms a cavity, and the inner support is arranged in the cavity; The inner support is provided with at least one convex platform at a predetermined distance from the upper cover, for placing the plug core;The inner support is provided with a recess of predetermined height for accommodating optical fiber; The convex platform is provided with at least one plane at the front position, and the plane is provided with an adhesive sheet for fixing the product to be inspected; The plane extends to the front end, and the rear end of the plane is provided with a notch, forming a stepped groove for placing the plug core.

2. The coupling tail fiber inspection package of claim 1, wherein, The convex platform includes: first platform and second platform arranged in parallel; The first platform and the second platform are provided with the same stepped groove arrayed in the horizontal direction.

3. The coupling tail fiber inspection package of claim 1, wherein, The bottom support and the upper cover are respectively provided with first buckle and second buckle that can be engaged with each other around.

4. The coupling tail fiber inspection package of claim 3, wherein, The bottom support and the upper cover are respectively provided with a hollow chamfer at a corresponding corner.

5. The coupling tail fiber inspection package of claim 3, wherein, The bottom end of the first buckle is provided with a first notch at the position; The bottom end of the second buckle is also provided with a second notch at the position; And the first notch and the second notch are staggered.

6. The coupling tail fiber inspection package of claim 1, wherein, The upper cover, inner support and bottom support are made of resin sheet or PET sheet or PP sheet, and the thickness is 0.6-1.5mm.

7. The coupling tail fiber inspection package of claim 1, wherein, The distance between the convex platform and the upper cover is 1.25mm-2.5mm.

8. The coupling tail fiber inspection package of claim 1, wherein, The plug core is a ceramic plug core.

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