Dispensing device and manufacturing method of optical fiber transmission module

Abstract

A kind of point glue device, including base, middle plate installed on the base and cover plate arranged above the middle plate, the middle of the base is formed with column, the middle plate is opened with the hole corresponding the position of the column, the upper side of the hole is equipped with accommodating groove, the cover plate is opened with exposure hole corresponding the position of the accommodating groove, the inner wall surface of the exposure hole is formed with a pair of positioning hole protruding to the exposure hole, the fixed hole is equipped with open mouth, and the positioning hole protrudes out below the lower surface of the cover plate downward.This application can effectively solve the problem that the coaxiality is not enough due to the larger gap between optical fiber and positioning hole of fixing frame.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical transmission, and in particular to a dispensing device and a manufacturing method of an optical fiber transmission module. BACKGROUND

[0002] At present, some small mobile terminals are equipped with a proximity sensor, which is used to automatically turn off the screen when a mobile phone or other portable product is put into a pocket, so as to avoid accidental touch; or used to automatically turn off the screen and enter a certain state when a tablet computer is closed with a protective case. The sensor is a proximity sensing optical transceiver system disclosed in the patent application No. 202110585787.2 of the People's Republic of China, specifically, below the screen of the electronic device, light is emitted by the light emitting unit, the light is transmitted through the screen and is received by the light receiving unit after being reflected by the proximity object to judge the distance of the proximity object, so as to inform the central processor to make corresponding actions. However, the light transmission of the system needs to set a large area of light transmission hole at the corresponding position of the screen, which may produce a large bright spot, causing defects in visual observation of the screen. If a dedicated light transmission medium is used, the natural light reflected after the light emitting unit is directly collected to achieve the function, or the transmission through the transmission medium can greatly reduce the area requirement of the screen transmission point. The optical fiber needs to be fixed in the module, and the optical fiber is very thin, the outer diameter of the optical fiber is 0.55mm, and the inner diameter of the fixing hole for fixing the optical fiber is 0.57mm. The optical fiber needs to be fixed in the fixing hole by glue, and the optical fiber and the fixing hole need to maintain good coaxiality. SUMMARY

[0003] Therefore, it is necessary to provide a dispensing device for accurately fixing an optical fiber and a manufacturing method of an optical fiber transmission module.

[0004] To solve the above technical problems, the present application provides a dispensing device, which comprises a base, a middle plate mounted on the base, and a cover plate arranged above the middle plate. The middle of the base is upwardly protruding to form a stand, and the middle plate is provided with a through hole corresponding to the position of the stand. The upper side of the through hole is provided with a receiving groove, and the cover plate is provided with an exposure hole corresponding to the position of the receiving groove. A pair of positioning holes are formed on the inner wall surface of the exposure hole and protrude towards the exposure hole. The fixing hole is provided with an open mouth, and the positioning hole protrudes downward below the lower surface of the cover plate.

[0005] Preferably, the dispensing device is used to fix the optical fiber in the fixing hole of a fixing frame, the fixing frame is fixed in the receiving groove, the stand is supported on the lower side of the fixing hole of the fixing frame, and the fixing hole comprises a main hole section and an open section located on the upper side of the main hole section. The open section is upwardly opened in a trumpet shape.

[0006] Preferably, the lower side of the positioning hole is above the open section, the positioning hole comprises a positioning hole section at the lower end and a tapered hole section formed on the upper side of the positioning hole section, the tapered hole section is upwardly trumpet-shaped, the optical fiber is loaded into the positioning hole of the fixing frame from the tapered hole section and falls into the positioning hole, and the top of the optical fiber is accommodated in the positioning hole section.

[0007] Preferably, glue is injected into the open section from the open mouth of the exposure hole and cured to pre-fix the optical fiber in the fixing hole, and glue is injected around the outer periphery of the optical fiber after the fixing frame is removed.

[0008] Preferably, the column is upwardly protruding to form a limiting protruding column, the lower side of the main hole section of the fixing hole is formed with a limiting section with a smaller inner diameter than the main hole section, and the limiting protruding column enters the limiting section upwardly and supports the lower surface of the optical fiber.

[0009] Preferably, bolt holes are provided on the base, the middle plate and the cover plate, and the three are positioned by inserting a bolt into the bolt hole.

[0010] Preferably, the fixing frame is further provided with a lens hole and a positioning part, and the cover plate is downwardly protruding to form a fixing frame positioning member inserted into the lens hole and the positioning part to position the fixing frame.

[0011] Preferably, the arc length of the open mouth is not more than one third of the total arc length of the positioning hole, the cover plate is further provided with a longitudinal through groove, a lower recess continues to be recessed downwardly from the longitudinal through groove, the exposure hole penetrates the middle part of the lower recess, an optical fiber limiting part is protruding from the inner wall surface of the side of the exposure hole close to the longitudinal through groove to the exposure hole, the optical fiber limiting part comprises a protruding block, the bottom of the protruding block is downwardly protruding to a lower hanging part of the lower surface of the cover plate, the positioning hole is formed on the longitudinal sides of the protruding block, and the open mouth is located on the longitudinal outer side of the positioning hole.

[0012] To solve the above technical problems, the application further provides a manufacturing method of an optical fiber transmission module, which utilizes the aforementioned dispensing device to manufacture the optical fiber transmission module, and comprises the following steps:

[0013] S201, assembling the middle plate on the base and loading the fixing frame into the accommodating groove of the middle plate; the column on the base extends into the through hole;

[0014] S202, covering the cover plate on the middle plate and fixing the fixing frame below;

[0015] S203, inserting two sections of optical fiber into the fixing hole of the fixing frame from the tapered hole section at the top of the positioning hole until the bottom;

[0016] S204, glue the optical fiber on the fixing frame through the exposure hole and the open port;

[0017] S205, detach the fixing frame from the glue dispensing device;

[0018] S206, solidify after dispensing glue around the optical fiber above the open section of the fixing frame.

[0019] Preferably, the arc length of the open port is not more than one third of the total arc length of the positioning hole, the cover plate is further provided with a longitudinal through groove and a lower recess continuing downward from the longitudinal through groove, the exposure hole penetrates the middle part of the lower recess, the optical fiber limiting part is formed on the inner wall surface of the side of the exposure hole close to the longitudinal through groove, the optical fiber limiting part includes a protruding block, the bottom of the protruding block protrudes downward to form a lower suspension part of the lower surface of the cover plate, the positioning hole is formed through the longitudinal two sides of the protruding block, the open port is located on the longitudinal outer side of the positioning hole, and the difference between the outer diameter of the optical fiber and the positioning hole section is less than the difference between the inner diameter of the main hole section and the outer diameter of the optical fiber.

[0020] The glue dispensing device and the manufacturing method of the optical fiber transmission module are provided with a pair of positioning holes with an open port on the cover plate, the upper end of the optical fiber is limited in the positioning hole during glue dispensing, so that the optical fiber and the fixing hole of the fixing frame maintain good coaxiality. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute improper limitations on the present application.

[0022] Embodiment one

[0023] Figure 1 It is a perspective view of the optical fiber transmission module of embodiment one;

[0024] Figure 2 It is another perspective view of the optical fiber transmission module of embodiment one;

[0025] Figure 3 It is a sectional view of the fixing frame of the optical fiber transmission module of embodiment one;

[0026] Figure 4 It is a perspective view of the optical fiber of embodiment one;

[0027] Figure 5 It is a sectional view along the A-A line shown in the figure; Figure 1

[0028] Embodiment two

[0029] ​Figure 6 Figure 2 is a perspective view of the dispensing apparatus of Example 2;

[0030] Figure 7 Figure 3 is an exploded perspective view of the dispensing apparatus of Example 2;

[0031] Figure 8 Figure 4 is an exploded perspective view of the dispensing apparatus of Example 2 from another angle;

[0032] Figure 9 Figure 5 is a cross-sectional view along the line B-B shown in Figure 2; Figure 8

[0033] Figure 10 Figure 6 is a cross-sectional view along the line B-B shown in Figure 2; Figure 6

[0034] Figure 11 Figure 7 is a cross-sectional view along the line B-B shown in Figure 2; Figure 6

[0035] Figure 12 Figure 8 is a cross-sectional view along the line B-B shown in Figure 2; Figure 11

[0036] Example 3

[0037] Figure 13 Figure 9 is a perspective view of the demoulding apparatus of Example 3;

[0038] Figure 14 Figure 10 is a cross-sectional view along the line C-C shown in Figure 9; Figure 13

[0039] Figure 15 Figure 11 is an exploded perspective view of the demoulding apparatus of Example 3.

[0040] BRIEF DESCRIPTION OF THE DRAWINGS

[0041] ​​​​​Optical fiber-10; light guide-11; outer cladding-12; coating-13; fixing frame-20; lens hole-21; conductive sheet-22; fixing hole-23; main hole section-231; open section-232; limiting section-233; limiting step-234; lower opening-235; glue-24; spacer-25; positioning part-26; dispensing device-30; base-31; base plate body-311; column-312; limiting convex column-313; bolt hole-314, 323, 333, 412, 422; middle plate-32; containing groove-321; through hole-322; cover plate-33; cover plate body-331; longitudinal through slot-332; lower recess-334; exposed hole-335; optical fiber limiting part-336; protrusion-3361; lower suspension-3362; separation groove-3363; positioning hole-3364; open mouth-3365; gradual change hole section-3366; positioning hole section-3367; fixing frame positioning piece-337, 338; demolding device-40; bottom plate-41; bottom plate body-411; support column-413; support block-414; lower pressing plate-42; lower pressing plate body-421; convex strip-423; through hole-424. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with specific embodiments of the present application and corresponding drawings.

[0043] The present application is based on Figure 6 The X direction shown in the drawings is the transverse direction, the Y direction is the longitudinal direction, and the Z direction is the vertical direction. The present application relates to a product structure of an optical fiber transmission module, a dispensing device for dispensing and fixing an optical fiber on a fixing frame 20, and a demolding device for removing the optical fiber transmission module from the cover plate 33 of the dispensing device.

[0044] Embodiment one

[0045] Please refer to Figures 1 to 5 The optical fiber transmission module of embodiment one includes a fixing frame 20 and an optical fiber 10 fixed in the fixing frame 20 by glue.

[0046] The optical fiber 10 includes a light guide 11 and an outer cladding 12 wrapped outside the light guide 11. The light guide 11 serves as a light transmission medium, and the outer cladding 12 is wrapped outside the light guide 11. The outer cladding 12 cannot guide light. The outer diameter of the optical fiber 10 is 0.55 mm, and both ends of the optical fiber 10 are polished and polished, with good light guiding effect.

[0047] The fixing frame 20 comprises a lens hole 20, a conductive sheet 22 formed in the lens hole 21 of the fixing frame 20, a pair of fixing holes 23 through the fixing frame 20, and a positioning portion 26 formed at one end of the fixing frame 20. The positioning portion 26 is a hole structure formed on the fixing frame 20.

[0048] For details, see Figure 3 As shown, the fixing hole 23 comprises a main hole section 231, an open section 232 above the main hole section 231, and a limiting section 233 below the main hole section 231. The inner diameter of the main hole section 231 is smaller than that of the open section 232, and the inner diameter of the limiting section 233 is smaller than that of the main hole section 231. The fixing holes 23 are arranged side by side as a pair, and the open section 232 is trumpet-shaped upward and serves as a demolding opening. The limiting section 233 and the main hole section 231 form a limiting step 234 at the joint, and the bottom of the limiting section 233 forms a lower opening 235, the inner diameter of which is larger than that of the limiting section 233.

[0049] The inner diameter of the main hole section 231 is 0.60 mm, the optical fiber 10 is placed into the main hole section 231 from above the open section 232, and the outer cladding 12 of the lower end of the optical fiber 10 is at least partially limited on the limiting step 234 and does not fall from below the limiting section 233.

[0050] When the optical fiber 10 enters the fixing hole 23, the single-sided gap between the outer diameter of the optical fiber 10 and the inner diameter of the main hole section 231 is 0.025 mm, so that the maximum single-sided gap between the optical fiber 10 and the fixing hole 23 can reach 0.05 mm when the optical fiber 10 is inclined. According to the customer's quality requirements, the single-sided gap between the optical fiber 10 and the fixing hole 23 cannot be greater than 0.03 mm.

[0051] To improve the coaxiality of the optical fiber 10 and the fixing hole 23, before the optical fiber 10 is fixed by dispensing, glue is sprayed on the outer layer of the optical fiber 10 or a PVD layer is added to form a coating layer 13, the thickness of the coating layer 13 is between 0.01-0.02 mm, so that the outer diameter of the optical fiber 10 will increase by 0.02-0.04 mm, and the outer diameter of the optical fiber 10 will reach 0.57-0.59 mm. At this time, in a free state, the gap between the optical fiber 10 and the main hole section 231 is between 0.01-0.03, which meets the customer's quality requirements.

[0052] After the optical fiber 10 is loaded into the fixing hole 23, the dispensing device injects glue along the open section 232, so that the glue is contained outside the open section 232 to fix the optical fiber 10 in the fixing hole 23.

[0053] The manufacturing method of the optical fiber transmission module comprises the following steps:

[0054] S101, providing a fixed frame 20 formed by injection molding;

[0055] The fixed frame 20 formed in this step comprises a pair of fixing holes 23, which comprise a main hole section 231, an open section 232 above the main hole section 231, and a limiting section 233 below the main hole section 231. The inner diameter of the main hole section 231 is smaller than that of the open section 232, and the inner diameter of the limiting section 233 is smaller than that of the main hole section 231. A limiting step 234 is formed above the joint of the limiting section 233 and the main hole section 231.

[0056] S102, providing an optical fiber 10 and adding a coating layer 13 outside the optical fiber 10;

[0057] The outer diameter of the optical fiber 10 is 0.55 mm, the outer diameter after adding the coating layer 13 is greater than 0.57 mm and less than 0.59 mm, and the inner diameter of the main hole section 231 is 0.60 mm. The optical fiber 10 comprises a light guide body 11 and an outer cladding layer 12 wrapped outside the light guide body 11, and the coating layer is wrapped on the outer surface of the outer cladding layer 12.

[0058] S103, loading the optical fiber 10 into the fixing hole 23 from the open section 232, and limiting the bottom periphery of the optical fiber 10 on the limiting step 234;

[0059] The outer cladding layer 12 of the optical fiber 10 is limited on the limiting step 234. The upper end of the optical fiber 10 protrudes above the open section 232.

[0060] S104, injecting glue along the outer periphery of the optical fiber 10 at the open section 232 to fix the optical fiber 10 in the fixing hole 23 of the fixed frame 20.

[0061] The optical fiber transmission device and the manufacturing method of the optical fiber transmission device of the present application increase the outer diameter of the optical fiber 10 by setting a coating layer 13 outside the optical fiber 10, reduce the maximum gap between the optical fiber 10 and the fixing hole 23 to within 0.03 mm, and improve the coaxiality of the optical fiber 10 and the fixing hole 23.

[0062] Example Two

[0063] Please refer to Figures 6 to 11 As shown in the drawing for the description of the dispensing device 30 of the present embodiment, the dispensing device 30 of the present embodiment comprises a base 31, a middle plate 32 mounted on the base 31, and a cover plate 33 arranged above the middle plate 32.

[0064] The base 31 comprises a base plate body 311, a stand 312 protruding upward from the middle of the base plate body 311, and a pair of limiting protrusions 313 protruding upward from the stand 312. A bolt hole 314 is formed in the base plate body 311. The limiting protrusions 313 are circular columns, and the outer diameter of the limiting protrusions 313 is not greater than the inner diameter of the limiting section 233 of the fixing hole 23. The limiting protrusions 313 enter the limiting section 233 and support the light beam 10 in the fixing hole 23.

[0065] The middle plate 32 comprises a receiving groove 321 for receiving part of the fixing frame 20, and a through hole 322 formed in the receiving groove 321. After the fixing frame 20 is fixed in the receiving groove 321 of the middle plate 32, part of the fixing frame 20 is located in the through hole 322 and exposed downward.

[0066] The cover plate 33 comprises a cover plate body 331, a longitudinal through groove 332 formed in the surface of the cover plate body 331, a lower recess 334 formed in the side of the longitudinal through groove 332, an exposure hole 335 formed through the cover plate body 331, and an optical fiber limiting portion 336 formed on the inner wall of the exposure hole 335 close to the side of the longitudinal through groove 332.

[0067] The exposure hole 335 is formed by cutting off the middle part of the cover plate body 331 and the lower recess 334. The optical fiber limiting portion 336 is formed on the inner wall surface of the exposure hole 335 close to the side of the longitudinal through groove 332, and the top surface of the optical fiber limiting portion 336 is flush with the top surface of the longitudinal through groove 332. The bottom of the optical fiber limiting portion 336 protrudes downward from the lower surface of the cover plate body 331. The fixing frame positioning members 337, 338 extend downward from the lower surface of the cover plate body 331 on the inner wall surface of the exposure hole 335 away from the side of the optical fiber limiting portion 336. The fixing frame positioning member 337 is inserted into the lens hole 21 of the fixing frame 20 for positioning, and the fixing frame positioning member 338 positions the positioning portion 26 of the fixing frame 20, so that the fixing frame 20 is accurately positioned by the two fixing frame positioning members 337, 338.

[0068] The optical fiber limiting portion 336 comprises a protrusion 3361 protruding from the inner wall surface of the exposure hole 335 into the exposure hole 335, a lower suspension portion 3362 protruding downward from the bottom of the protrusion 3361 to the lower surface of the cover plate body 331, and a pair of positioning holes 3364 formed through the protrusion 3361 on the two lateral sides.

[0069] The lower suspension part 3362 is provided with a slot 3363 between a pair of positioning holes 3364, which is used to accommodate the spacer 25 between a pair of fixing holes 23 of the fixing frame 20. The longitudinal outer side of a pair of positioning holes 3364 is of an open structure and forms an open mouth 3365, which exposes the upper end part of the optical fiber 10 to the exposure hole 335. The arc length of the open mouth 3365 is not greater than one third of the arc length of the positioning hole 3364. The positioning hole 3364 includes a tapered hole section 3366 at the upper end, and a positioning hole section 3367 below the tapered hole section 3366, the inner diameter of the tapered hole section 3366 gradually decreases from top to bottom, and the positioning hole section 3367 is smoothly connected with the lower end of the tapered hole section 3366. The single-sided gap between the positioning hole section 3367 and the optical fiber 10 is not greater than 0.015 mm. That is, the inner diameter of the positioning hole section 3367 is between 0.55-0.58 mm.

[0070] The middle plate 32 and the cover plate 33 are also provided with a plurality of bolt holes 323, 333 at positions corresponding to the bolt holes 314 of the base 31. The base 31, the middle plate 32 and the cover plate 33 are fixed together by bolt bars passing through the bolt holes 314.

[0071] In this embodiment, the optical fiber 10 is fixed to the fixing hole 23 of the fixing frame 20 by point gluing, without the need to spray glue on the outer surface of the optical fiber 10 to increase the thickness as in the first embodiment.

[0072] The manufacturing method of the optical fiber transmission module of the second embodiment includes the following steps:

[0073] S201, assemble the middle plate 32 on the base 31, and put the fixing frame 20 into the accommodating groove of the middle plate 32;

[0074] The structure of the base 31 and the middle plate 32 has been described above and will not be repeated here. The stand column 312 and the limiting convex column 313 of the base 31 extend into the through hole 322. The limiting convex column 313 enters the limiting section 233 of the fixing hole 23 of the fixing frame 20 and is flush with the limiting step 234.

[0075] S202, cover the cover plate 33 on the middle plate 32 and fix the fixing frame 20 below;

[0076] In this step, the lower suspension part 3362 at the lower end of the positioning hole 3364 of the cover plate 33 is located in or above the open section 232 of the fixing hole 23, and the outer diameter of the positioning hole 3364 is smaller than the inner diameter of the upper part of the open section 232. At this time, the spacer 25 enters the slot 3363 in the middle of the lower suspension part 3362.

[0077] S203, inserting the two sections of optical fiber 10 from the tapered hole section 3366 at the top of the positioning hole 3364 into the limiting step 234 of the fixing frame 20 until the bottom;

[0078] In this step, the limiting protruding column 313 supports upward to keep the optical fiber 10 balanced, so as to make the optical fiber 10 keep better coaxiality with the fixing hole 23. At this time, the top of the optical fiber 10 is located in the positioning hole section 3367 of the positioning hole 3364, so that the optical fiber 10 keeps better coaxiality with the fixing hole 23 to make up for the problem of lower coaxiality caused by the larger inner diameter of the fixing hole 23.

[0079] S204, dispensing glue into the open section 232 through the open hole 3365 outside the longitudinal direction of the positioning hole 3364 and curing the glue.

[0080] The base 31, the middle plate 32 and the cover plate 33 of the dispensing device are made of transparent material. After dispensing, the dispensing device is irradiated by a UV light source to cure the glue.

[0081] S205, disassembling the fixing frame 20 from the dispensing device;

[0082] In this step, the cover plate 33 is taken off together with the fixing frame 20 from the middle plate 32, and then the fixing frame 20 is taken off from the cover plate 33.

[0083] S206, dispensing glue along the optical fiber 10 above the open section 232 of the fixing frame 20 and curing.

[0084] The dispensing device and the manufacturing method of the optical fiber transmission module of the present application set a pair of positioning holes 336 with open holes 3365 on the cover plate 33. When dispensing glue on the upper end of the optical fiber 10, the optical fiber 10 is limited in the positioning hole 336 to keep good coaxiality between the optical fiber 10 and the fixing hole 23 of the fixing frame 20.

[0085] Example three

[0086] Please refer to Figures 13 to 15As shown, it is the drawing of the demolding device 40 of the third embodiment. In step S205 of the second embodiment, the fixed frame 20 and the optical fiber 10 fixed thereon need to be removed from the dispensing device. During the removal process, the inner diameter of the positioning hole segment 3367 of the positioning hole 3364 of the cover plate 33 is very close to the outer diameter of the optical fiber 10 accommodated in the positioning hole segment 3367, resulting in a very small gap between the top of the optical fiber 10 and the inner wall surface of the positioning hole segment 3367. By pulling the fixed frame 20 downward by force, if the downward force is slightly offset, it will cause the optical fiber 10 to be scratched and damaged by the positioning hole segment 3367.

[0087] Therefore, a special demolding device is needed to solve the above technical problems.

[0088] The demolding device of the present embodiment includes a bottom plate 41, a lower pressing plate 42, a sleeve 43 supporting the bottom plate 41 and the lower pressing plate 42, and a spring (not shown) sleeved outside the sleeve 43 and supported between the bottom plate 41 and the lower pressing plate 42.

[0089] The bottom plate 41 includes a bottom plate body 411, a support column 413 protruding upward from the middle of the bottom plate body 411, and a support block 414 protruding upward from the top of the support column 413. The lower pressing plate 42 includes a lower pressing plate body 421, a pair of protrusions 423 protruding upward from the lower pressing plate body 421 in the transverse or longitudinal direction, and a through hole 424 penetrating the lower pressing plate body 421 and located between the pair of protrusions 423. The bottom plate 41 and the lower pressing plate 42 are also provided with bolt holes 412, 422 for installing the sleeve 43. The support column 413 passes through the through hole 424 of the lower pressing plate 42 and makes the top of the support block 414 protrude upward beyond the upper surface of the protrusion 423.

[0090] The cover plate 33 is inverted on the protrusions 423 and positioned by some positioning structures. At this time, the part of the fixed frame 20 near the optical fiber 10 is supported on the support block 414. Then, the cover plate 33 is pressed downward, so that the fixed frame 20 with the optical fiber 10 is supported on the support block 414, and the cover plate 33 moves downward, so that the head of the optical fiber 10 is separated from the positioning hole segment 3367. Further, the optical fiber 10 of the optical fiber transmission device of the present application is separated from the positioning hole segment 3367 of the cover plate 33 without damage.

[0091] The demolding method of the optical fiber transmission module of the present application includes the following steps:

[0092] S301, providing a demolding device 40;

[0093] The specific structure of the demolding device 40 has been described in detail above, and will not be repeated here.

[0094] S302, the cover plate 33 and the optical fiber 10 thereon are inverted on the convex strip 423 of the lower pressing plate 42 of the dispensing device 40;

[0095] In this step, the support block 414 of the support column 413 supports the fixing frame 20 upward, and the support position is adjusted to keep the fixing frame 20 in stable balance, especially to support the fixing frame 20 around the optical fiber 10.

[0096] S303, the cover plate 33 is pressed downward to separate the optical fiber 10 from the positioning hole segment 3367 and separate the optical fiber transmission module 20 from the cover plate 33;

[0097] In this step, the cover plate 33 needs to be pressed downward to balance and move downward synchronously at each position, and the spring is compressed, and the support block 414 of the support column 413 pushes the fixing frame 20 upward, and the cover plate 33 moves downward to separate the positioning hole segment 3367 from the optical fiber 10.

[0098] The demolding device 40 of the embodiment makes the positioning hole segment 3367 of the cover plate 33 separate from the optical fiber 10 without scratching by making the cover plate 33 move downward uniformly.

[0099] The above only describes the embodiments of the present application and is not used to limit the present application. The present application can have various changes and modifications for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. A dispensing device, characterized in that, The application relates to a fiber fixing device, which comprises a base, a middle plate fixed on the base and a cover plate arranged above the middle plate, wherein a stand column is formed by protruding upward in the middle of the base, a through hole is arranged in the middle plate corresponding to the position of the stand column, an accommodating groove is arranged on the upper side of the through hole, an exposure hole is arranged on the cover plate corresponding to the position of the accommodating groove, a pair of positioning holes are formed by protruding from the inner wall of the exposure hole to the exposure hole, the positioning holes are provided with open mouths, the positioning holes protrude downward below the lower surface of the cover plate, the dispensing device is used for dispensing and fixing the optical fiber in the fixing hole of a fixing frame, the fixing frame is fixed in the accommodating groove, the stand column is supported on the lower side of the fixing hole of the fixing frame, the fixing hole comprises a main hole section and an open section arranged on the upper side of the main hole section, and the open section is opened upward in a trumpet shape; The lower side of the positioning hole is arranged above the open section, the positioning hole comprises a positioning hole section arranged at the lower end and a gradually-changing hole section formed on the upper side of the positioning hole section, the gradually-changing hole section is opened upward in a trumpet shape, the optical fiber is arranged into the fixing hole of the fixing frame from the gradually-changing hole section and falls into the fixing hole, and the top of the optical fiber is accommodated in the positioning hole section; Glue is injected from the open mouth of the exposure hole to the open section and solidified to pre-fix the optical fiber in the fixing hole, the fixing frame is removed, glue is injected around the outer periphery of the optical fiber, and the open mouth is arranged on the longitudinal outer side of the positioning hole.

2. The device of claim 1, wherein, The stand column is formed by protruding upward in the middle of the base, the lower side of the main hole section of the fixing hole is formed with a limiting section with a smaller inner diameter than the main hole section, the limiting protruding column enters the limiting section upward and supports the lower surface of the optical fiber.

3. The dispensing device as described in claim 1, characterized in that, Bolt holes are arranged on the base, the middle plate and the cover plate, and the three are positioned by inserting a bolt into the bolt holes.

4. The device of claim 1, wherein The fixing frame is further provided with a lens hole and a positioning part, and the cover plate is formed by protruding downward with a fixing frame positioning member for positioning the fixing frame by being inserted into the lens hole and the positioning part.

5. The device of claim 1, wherein the nozzle is configured to dispense the adhesive in a pattern. The arc length of the open mouth is not more than one third of the total arc length of the positioning hole, a longitudinal through groove is further arranged on the cover plate and continuously recessed downward to form a lower recessed part, the exposure hole penetrates the middle part of the lower recessed part, an optical fiber limiting part is formed on the inner wall of the side of the exposure hole close to the longitudinal through groove and protrudes toward the exposure hole, the optical fiber limiting part comprises a protruding block, the bottom of the protruding block protrudes downward from the lower surface of the cover plate to form a lower hanging part, the positioning hole is arranged on the longitudinal two sides of the protruding block, the difference between the outer diameter of the positioning hole section and the outer diameter of the optical fiber is smaller than the difference between the inner diameter of the main hole section and the outer diameter of the optical fiber.

6. A method of manufacturing an optical fiber transmission module using the dispensing apparatus according to claim 1, wherein The application further discloses a fiber fixing method, which comprises the following steps: S201, the middle plate is assembled on the base, and the fixing frame is arranged in the accommodating groove of the middle plate; the stand column of the base is arranged in the through hole; S202, the cover plate is arranged on the middle plate, and the fixing frame is fixed below; S203, two sections of optical fibers are inserted into the fixing hole of the fixing frame from the gradually-changing hole section at the top of the positioning hole until the bottom; S204, glue is injected into the open section of the positioning hole from the open mouth on the longitudinal outer side of the positioning hole and solidified; S205, detach the fixed frame from the glue dispensing device; S206, solidify after dispensing the optical fiber glue along the opening section of the fixed frame.

7. The method of claim 6, wherein the step of applying a coating to the optical fiber is performed after the step of applying a coating to the optical fiber cable. The arc length of the opening is not more than one third of the total arc length of the positioning hole, a longitudinal through groove is further formed on the cover plate, a lower recess is further formed downward from the longitudinal through groove, the exposure hole penetrates the middle part of the lower recess, an optical fiber limiting part is formed on the inner wall surface of the side of the exposure hole close to the longitudinal through groove, the optical fiber limiting part includes a protruding block, the bottom of the protruding block protrudes downward to form a lower suspension part on the lower surface of the cover plate, the positioning hole is formed on the longitudinal two sides of the protruding block.

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