A short fiber component length measuring device

Abstract

The present invention provides a short fiber assembly length measuring device, comprising: an air supply device, a base, a cover plate arranged on the base and detachably fixedly connected to the base, and a CCD camera, wherein the base is provided with a slot for accommodating the short fiber assembly, and an air passage with one end connected to the slot and the other end connected to the air supply device, the cover plate is provided with an exhaust through hole with one end connected to the slot, the portion of the cover plate facing the slot is a transparent area and / or the portion of the base facing the slot is a transparent area, the portion of the base corresponding to at least one of the two side surfaces of the slot along the length direction of the short fiber assembly is a transparent area, and the CCD camera is used to collect image information of the transparent area. The present invention can measure the length of the short fiber assembly without damaging the short fiber assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of staple fiber component detection, and in particular to a staple fiber component length measuring device. Background Art

[0002] refer to Figure 1 , Figure 1 It is a schematic diagram of the structure of a short fiber assembly in the prior art. The short fiber assembly includes an optical port adapter, an optical fiber and an AWG (array waveguide grating) chip, wherein one end of the optical fiber is coupled to the optical port adapter, and the other end is coupled to the AWG chip. Specifically, the optical fiber is coupled to the AWG chip through a tail tube. In order to ensure that the short fiber assembly can be well coupled and installed on the circuit board of the optical module, it is generally necessary to ensure that the length from the bottom surface of the convex edge of the optical port adapter to the output end of the AWG chip meets the design specifications.

[0003] Because the optical fiber is thin and fragile, and is easily bent or tilted, and the output end of the AWG chip is easily damaged and broken, it is inconvenient to clamp and touch.

[0004] The existing method for measuring the length of a short fiber assembly is to set a base, on which a slot for fixing an optical port adapter and a support table for supporting a chip tail tube are provided. Through the structural height matching design, after the optical port adapter and the AWG chip are placed on the slot and the support table respectively, the center lines of the optical port adapter, the tail tube and the AWG chip are located on the same axis, and then the required length is measured by a measuring tool. In this way, slots and support tables of different shapes and heights are set on the base. Due to the machining tolerance of the metal parts themselves (for example, ±0.03mm), there may be a 0.03mm machining tolerance on the bottom of the slot and a 0.03mm tolerance on the support table surface; that is, after the AWG short fiber assembly is placed on the bottom of the slot of the fixture base and the support table surface, the height between the optical fiber centers of the two may have a superimposed height tolerance of 0.06mm, that is, the actual optical port adapter, the optical fiber and the center of the chip tail tube end are not on the same axis; combined with the short fiber length (for example, 20mm), the measured fiber length will be about 0.1mm shorter than the actual length. Optical components are high-precision products. A 0.1mm difference in length will lead to poor installation and thus product scrapping. Moreover, the shorter the actual component length, the greater the impact of the stacking height tolerance on the measurement accuracy.

[0005] If two mechanical limiters or clamps are used to clamp the optical port adapter and the chip end tail tube respectively, and the three-dimensional position between the two is adjusted simply by a mechanical motion mechanism so that the centers of the two and the optical fiber are located on the same axis, on the one hand, the motion mechanism is not accurate enough and high-precision fine-tuning cannot be achieved; on the other hand, adjusting the three to the same axis requires reducing the height difference at both ends and increasing the horizontal distance at both ends. Conventional three-dimensional mechanical adjustment cannot adjust two directions at the same time and needs to be done in sequence; if the height difference is reduced first, the optical fiber in the middle of the component will be further bent, and the adjustment amplitude will not be well controlled, which can easily damage the optical fiber; if the horizontal distance is adjusted first, it is easy to form a pulling force on the connection points at both ends of the optical fiber, which can easily damage the short fiber component.

[0006] Therefore, it is necessary to improve the existing short fiber component length measuring device so that the short fiber component length measuring device does not damage the short fiber component during the process of measuring the length of the short fiber component. Summary of the invention

[0007] The object of the present invention is to provide a short fiber assembly length measuring device to solve the problem that the existing short fiber assembly length measuring device is easy to damage the short fiber assembly.

[0008] In order to solve the above technical problems, the present invention provides a short fiber assembly length measuring device, comprising: an air supply device, a base, a cover plate covered on the base and detachably fixedly connected to the base, and a CCD camera, wherein the base is provided with a slot for accommodating the short fiber assembly, and an air duct connected to the slot at one end and the air supply device at the other end, the cover plate is provided with an exhaust hole connected to the slot at one end, the portion of the cover plate facing the slot is a transparent area and / or the portion of the base facing the slot is a transparent area, the portion of the base corresponding to at least one of the two side surfaces of the slot along the length direction of the short fiber assembly is a transparent area, and the CCD camera is used to collect image information of the transparent area.

[0009] Optionally, the card slot includes an adapter optical port card slot opened on the base for accommodating an optical port adapter, a fiber limiting slot connected to the adapter optical port card slot for accommodating an optical fiber, and a chip accommodating slot connected to the fiber limiting slot for accommodating an AWG chip.

[0010] Optionally, the air channel includes an air inlet channel opened at the bottom of the base and connected to the air supply device, and a sub-air channel connected to the air inlet channel at one end, and the other end of the sub-air channel is respectively located on the two side surfaces and the middle of the bottom of the optical fiber limiting groove, the two sides of the chip accommodating groove and corresponding to the tail pipe, the tip of the AWG chip, and the bottom of the adapter optical port slot.

[0011] Optionally, the short fiber assembly length measuring device further includes a regulating valve, and the regulating valve is arranged on each sub-air channel.

[0012] Optionally, an air hole is provided on the cover plate in a region corresponding to the middle of the optical fiber limiting groove, and the air hole is connected to the air supply device.

[0013] Optionally, the base is further provided with an adapter pressing component for pressing the bottom surface of the adapter convex edge against the groove surface of the adapter optical port card slot.

[0014] Optionally, the adapter tightening assembly includes an adjusting screw threadedly connected to the base and an elastic lifting block connected to one end of the adjusting screw and disposed in the adapter optical port slot.

[0015] Optionally, the exhaust through hole includes a first avoidance opening and a second avoidance opening which are opened on the cover plate and correspond to the optical port adapter and the AWG chip respectively.

[0016] Optionally, the base is further provided with a pressure relief air passage connected to the card slot.

[0017] Optionally, the base and the cover are fixedly connected by screws.

[0018] The present invention provides a short fiber assembly length measuring device, which has the following beneficial effects:

[0019] Since the base is provided with a slot for accommodating the short fiber assembly, and an air duct with one end connected to the slot and the other end connected to the air supply device, and the cover plate is provided with an exhaust hole with one end connected to the slot, when air is inflated into the slot on the base through the air supply device, the airflow can press the AWG chip in the short fiber assembly against the cover plate, and the short fiber assembly can be straightened under the action of the airflow, so the CCD camera can be used to collect image information of the transparent area, and when the short fiber assembly is straightened, the length from the bottom surface of the convex edge of the optical port adapter of the short fiber assembly to the output end of the AWG chip can be collected by the CCD camera. Since the staple fiber assembly is straightened by the airflow, the staple fiber assembly will not be damaged during the measurement process. Since a CCD camera is used to monitor the effect of the airflow straightening the staple fiber assembly, the accuracy of the optical port adapter, the optical fiber and the center of the chip tail tube end of the staple fiber assembly being located on the same axis can be ensured. At the same time, a CCD camera is used to measure the length from the bottom surface of the convex edge of the optical port adapter to the output end of the AWG chip. Therefore, the measurement accuracy is relatively high. In this way, the staple fiber assembly length measuring device has the characteristics of high detection accuracy and no damage to the staple fiber assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of a staple fiber assembly in the prior art;

[0021] Figure 2 is a schematic structural diagram of a short fiber assembly length measuring device according to an embodiment of the present invention;

[0022] Figure 3 It is a schematic diagram of the partial structure of a device for measuring the length of a staple fiber assembly according to an embodiment of the present invention;

[0023] Figure 4 2 is a schematic diagram of the structure of the short fiber assembly length measuring device in an embodiment of the present invention, in which a cover plate is not provided;

[0024] Figure 5 yes Figure 4 A partial enlarged schematic diagram of

[0025] Figure 6 is a schematic structural diagram of a base in a device for measuring the length of a staple fiber assembly in an embodiment of the present invention;

[0026] Figure 7 is a cross-sectional view of a base in a device for measuring the length of a staple fiber assembly according to an embodiment of the present invention;

[0027] Figure 8 It is a structural schematic diagram of an adapter tightening assembly installed on a base in a short fiber assembly length measuring device in an embodiment of the present invention;

[0028] Fig. 9 It is a structural schematic diagram of an adapter tightening assembly and a short fiber assembly installed on a base in a short fiber assembly length measuring device in an embodiment of the present invention.

[0029] Description of reference numerals:

[0030] 110-optical port adapter; 120-optical fiber; 130-AWG chip; 140-tail tube; 150-adapter convex bottom surface; 160-AWG chip output end;

[0031] 200-gas supply device;

[0032] 300-base; 310-card slot; 311-adapter optical port card slot; 312-optical fiber limiting slot; 313-chip receiving slot; 321-air inlet channel; 322-sub-airway;

[0033] 400-cover plate; 411-first avoidance opening; 412-second avoidance opening; 420-air hole;

[0034] 500-adapter tightening assembly; 510-adjusting screw; 520-elastic top block;

[0035] 600-Screw. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the units of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 , Figure 2 is a schematic diagram of the structure of a short fiber assembly length measuring device in an embodiment of the present invention, Figure 3 is a partial structural schematic diagram of a short fiber assembly length measuring device in an embodiment of the present invention, Figure 4 4 is a schematic diagram of the structure of the short fiber assembly length measuring device in the embodiment of the present invention without the cover plate 400. Figure 5 yes Figure 4 A partial enlarged schematic diagram of Figure 6 is a schematic structural diagram of a base 300 in a device for measuring the length of a staple fiber assembly according to an embodiment of the present invention, Figure 7 is a cross-sectional view of a base 300 in a device for measuring the length of a staple fiber assembly according to an embodiment of the present invention, Figure 8 3 is a schematic structural diagram of an adapter tightening assembly 500 installed on a base 300 in a short fiber assembly length measuring device in an embodiment of the present invention, Fig. 9 It is a structural schematic diagram of an adapter tightening assembly 500 and a staple fiber assembly installed on a base 300 in a staple fiber assembly length measuring device in an embodiment of the present invention. This embodiment provides a staple fiber assembly length measuring device, comprising: an air supply device 200, a base 300, a cover plate 400 covered on the base 300 and detachably fixedly connected to the base 300, and a CCD camera, wherein the base 300 is provided with a slot 310 for accommodating the staple fiber assembly, and an air passage connected to the slot 310 at one end and the air supply device 200 at the other end, the cover plate 400 is provided with an exhaust through hole connected to the slot 310 at one end, the portion of the cover plate 400 directly facing the slot 310 is a transparent area and / or the portion of the base 300 directly facing the slot 310 is a transparent area, the portion of the base 300 corresponding to at least one of the two side surfaces of the slot 310 along the length direction of the staple fiber assembly is a transparent area, and the CCD camera is used to collect image information of the transparent area.

[0043] Since the base 300 is provided with a slot 310 for accommodating the short fiber assembly, and an air duct which is connected to the slot 310 at one end and to the air supply device 200 at the other end, and the cover plate 400 is provided with an exhaust hole which is connected to the slot 310 at one end, when air is inflated into the slot 310 on the base 300 through the air supply device 200, the airflow can press the AWG chip 130 in the short fiber assembly against the cover plate 400, and the short fiber assembly can be straightened under the action of the airflow, so the CCD camera can be used to collect image information of the transparent area, and when the short fiber assembly is straightened, the length from the bottom surface of the convex edge of the optical port adapter 110 of the short fiber assembly to the output end 160 of the AWG chip can be collected by the CCD camera. Since the staple fiber assembly is straightened by airflow, the staple fiber assembly will not be damaged during the measurement process. Since a CCD camera is used to monitor the effect of the airflow straightening the staple fiber assembly (for example, CCD cameras are arranged on both sides in the length direction of the staple fiber assembly, and the optical port adapter, optical fiber and chip tail tube end centers can be observed from both sides in the length direction of the staple fiber assembly (sides parallel to the thickness direction of the staple fiber assembly and sides perpendicular to the thickness direction of the staple fiber assembly) to see whether they are located on the same axis), the accuracy of the optical port adapter, optical fiber and chip tail tube end centers of the staple fiber assembly being located on the same axis can be ensured. At the same time, a CCD camera is used to measure the length from the bottom surface of the convex edge of the optical port adapter 110 to the output end 160 of the AWG chip. Therefore, the measurement accuracy is relatively high. In this way, the staple fiber assembly length measuring device has the characteristics of high detection accuracy and no damage to the staple fiber assembly.

[0044] refer to Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 The card slot 310 includes an adapter optical port card slot 311 opened on the base 300 for accommodating the optical port adapter 110, a fiber limiting groove 312 connected to the adapter optical port card slot 311 for accommodating the optical fiber 120, and a chip accommodating groove 313 connected to the fiber limiting groove 312 for accommodating the AWG chip 130.

[0045] refer to Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9The air channel includes an air inlet channel 321 opened at the bottom of the base 300 and connected to the air supply device 200, and a sub-air channel 322 connected to the air inlet channel 321 at one end, and the other end of the sub-air channel 322 is respectively located on the two side surfaces and the middle of the bottom of the optical fiber limiting groove 312, the two sides of the chip accommodating groove 313 and corresponding to the tail pipe 140, the AWG chip 130 tip, and the bottom of the adapter optical port slot 311.

[0046] refer to Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 The exhaust through hole includes a first avoidance opening 411 and a second avoidance opening 412 which are opened on the cover plate 400 and correspond to the optical port adapter 110 and the AWG chip 130 respectively.

[0047] refer to Figure 3 The cover plate 400 is provided with an air hole 420 in the middle of the optical fiber limiting groove 312, and the air hole 420 is connected to the air supply device 200. In this way, the optical fiber 120 can be kept in a straight state under the action of air pressure in the optical fiber limiting groove 312, further avoiding deformation of the optical fiber 120 in the short fiber assembly, improving the measurement accuracy and not damaging the short fiber assembly.

[0048] refer to Figure 3 and Figure 4 The base 300 is also provided with a pressure relief airway connected to the card slot 310, which is used to provide an additional exhaust channel to ensure pressure balance when the air flow is too large and the first avoidance opening 411 and the second avoidance opening on the cover plate 400 are insufficient to exhaust air.

[0049] refer to Figure 8 and Fig. 9 The base 300 may also be provided with an adapter tightening assembly 500 for tightening the adapter flange bottom surface 150 against the adapter optical port slot 311 to ensure the length measurement accuracy of the short fiber assembly.

[0050] Specifically, the adapter pressing assembly 500 includes an adjusting screw 510 threadedly connected to the base 300 and an elastic top block 520 connected to one end of the adjusting screw 510 and disposed in the adapter optical port slot 311. When the adjusting screw 510 is rotated, the elastic top block 520 can be moved closer to or farther away from the end of the adapter optical port slot 311 close to the optical fiber 120. When the elastic top block 520 is close to the end of the adapter optical port slot 311 close to the optical fiber 120, the bottom surface of the convex edge of the optical port adapter 110 can be pressed against the end of the adapter optical port slot 311 close to the optical fiber 120, thereby ensuring the length measurement accuracy of the short fiber assembly.

[0051] refer to Figure 3 The base 300 and the cover plate 400 are fixedly connected by a screw 600 .

[0052] The short fiber assembly length measuring device also includes a regulating valve, which is arranged on each sub-air channel 322 to adjust parameters such as air pressure, air flow and time according to needs.

[0053] In this embodiment, the portion of the cover plate 400 facing the slot 310 is a transparent area, and the portion of the base 300 corresponding to one of the two side surfaces of the slot 310 along the length direction of the staple fiber assembly is a transparent area, for example, a notch is provided in the portion of the cover plate 400 facing the slot 310, and a notch is provided in the portion of the base 300 corresponding to one of the two side surfaces of the slot 310 along the length direction of the staple fiber assembly, and a transparent plate is installed in the notch. In another embodiment, the portion of the base 300 facing the slot 310 is a transparent area, and the portion of the base 300 corresponding to one of the two side surfaces of the slot 310 along the length direction of the staple fiber assembly is a transparent area, and a notch can be provided in the portion of the base 300 facing the slot 310, and a notch is provided in the portion of the base 300 corresponding to one of the two side surfaces of the slot 310 along the length direction of the staple fiber assembly, and a transparent plate is installed in the notch. In another embodiment, the base 300 and the cover 400 are made of transparent material, such as acrylic.

[0054] In this embodiment, the working process of the short fiber assembly length measuring device is as follows:

[0055] First, install the short fiber assembly in the slot 310. Then, fix the cover plate 400 on the bottom plate by the screw 600. Then, supply air into the slot 310 by the air supply device 200, and observe the connection end of the optical fiber 120 and the optical port adapter 110, the position of the optical fiber 120, and the position of the connection point of the optical fiber 120 tail tube 140 and the AWG chip 130 by the CCD camera, so as to confirm the relative position between the optical port adapter 110, the optical fiber 120 and the AWG chip 130, and directly observe the length of the short fiber assembly. Among them, when supplying air into the slot 310 by the air supply device 200, the parameters such as air pressure, flow rate and time on each sub-air channel 322 can be adjusted by the regulating valve.

[0056] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A short fiber assembly length measuring device, characterized in that: include: An air supply device, a base, a cover plate arranged on the base and detachably fixedly connected to the base, and a CCD camera, wherein the base is provided with a slot for accommodating the staple component, and an air duct connected to the slot at one end and the air supply device at the other end, an exhaust through hole connected to the slot at one end is provided on the cover plate, the portion of the cover plate facing the slot is a transparent area and / or the portion of the base facing the slot is a transparent area, the portion of the base corresponding to at least one of the two side surfaces of the slot along the length direction of the staple component is a transparent area, and the CCD camera is used to collect transparent The image information of the area, the card slot includes an adapter optical port card slot opened on the base for accommodating an optical port adapter, an optical fiber limiting groove connected to the adapter optical port card slot for accommodating an optical fiber, and a chip accommodating groove connected to the optical fiber limiting groove for accommodating an AWG chip, the air channel includes an air inlet channel opened at the bottom of the base and connected to the air supply device, and a sub-air channel connected to the air inlet channel at one end, the other end of the sub-air channel is respectively located at the two side surfaces and the middle of the bottom of the optical fiber limiting groove, the two sides of the chip accommodating groove and the corresponding positions of the tail pipe and the tip of the AWG chip, and the bottom of the adapter optical port card slot.

2. The device for measuring the length of a staple fiber assembly according to claim 1, characterized in that: The short fiber assembly length measuring device also includes a regulating valve, which is arranged on each sub-air channel.

3. The device for measuring the length of a staple fiber assembly according to claim 1, characterized in that: An air hole is also provided on the cover plate in a region corresponding to the middle of the optical fiber limiting groove, and the air hole is connected to the air supply device.

4. The device for measuring the length of a staple fiber assembly according to claim 1, characterized in that: The base is also provided with an adapter pressing component, which is used to press the bottom surface of the adapter convex edge against the groove surface of the adapter optical port card groove.

5. The device for measuring the length of a staple fiber assembly according to claim 4, characterized in that: The adapter tightening assembly comprises an adjusting screw threadedly connected to the base and an elastic lifting block connected to one end of the adjusting screw and arranged in the optical port slot of the adapter.

6. The device for measuring the length of a staple fiber assembly according to claim 1, characterized in that: The exhaust through hole comprises a first avoidance opening and a second avoidance opening which are opened on the cover plate and correspond to the optical port adapter and the AWG chip respectively.

7. The device for measuring the length of a staple fiber assembly according to claim 1, characterized in that: The base is also provided with a pressure relief air passage communicated with the card slot.

8. The device for measuring the length of a staple fiber assembly according to claim 1, characterized in that: The base and the cover plate are fixedly connected via screws.

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