Fiber coiling tool for fixing optical fiber of ball grid array optical assembly
By designing a fiber optic coiling fixture for ball grid array optical components, using polyetheretherketone (PEEK) engineering plastic and a specific structure, the problem of fiber pre-fixation was solved, achieving stable fiber pre-fixation and high-temperature adaptability, and improving production efficiency.
Patent Information
- Application Number
- CN202520619547.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-04-03
AI Technical Summary
The lack of pre-fixing fixtures for optical fibers in existing technologies makes the optical fibers prone to damage during actual operation, affecting the smooth progress of subsequent processes.
A fiber optic coiling fixture for ball grid array optical components was designed, including the fixture body and the optical component. It is made of polyetheretherketone engineering plastic and features structures such as an adhesive part, a coiling shaft, and a reversing groove to achieve pre-fixation and 180° reversal of the optical fiber, avoiding tensile stress caused by thermal expansion and contraction, and is resistant to high-temperature reflow soldering.
It achieves stable pre-fixation of optical fibers, avoids physical damage, is suitable for high-temperature reflow soldering, simplifies subsequent processes, and improves production efficiency.
Smart Images
Figure CN223911091U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to optical assembly packaging technical field, concretely is a disc fiber tool for ball grid array optical assembly optical fiber fixed. BACKGROUND
[0002] With the rapid development of optical module field, the demand of optical assembly as the key device is increasing year by year, so the requirement of production batch and automation degree is higher and higher. Compared with conventional components, the existing ball grid array optical assembly has optical fiber for receiving and emitting optical signal in addition to the ball grid array with multiple pins, so the optical assembly needs to realize optical fiber coiling pre-fixing in the application of optical module, and then can be automatically pasted and high-temperature reflow soldered like conventional ball grid array components.
[0003] In the existing process flow, there is no tool for coiling and pre-fixing the optical fiber of the optical assembly, which can easily cause damage to the optical fiber in the actual operation process, resulting in a lot of loss, and also affecting the smooth progress of the subsequent process flow. UTILITY MODEL CONTENTS
[0004] The utility model solves the technical problem that the optical fiber of the optical assembly is not pre-fixed, and the optical fiber is easily damaged in the actual process flow. A disc fiber tool for ball grid array optical assembly optical fiber fixing is provided for the problem, which comprises a tool body and an optical assembly with optical fiber. The optical assembly is adhered to the tool body. The tool body is made of polyether ether ketone engineering plastic. The tool body comprises a base and an extension part. The extension part is arranged on the side wall of the base. The adhering part of the optical assembly is arranged below the base. The coiling shaft is arranged above the base. The deflection groove for deflecting the optical fiber by 180 degrees is arranged on the extension part. The end fixing hole of the optical fiber is also arranged on the extension part.
[0005] The technical scheme of the embodiment can realize the connection between the tool body and the optical assembly by setting the structure of the adhering part and the coiling shaft, and pre-fix the optical fiber for subsequent process flow. The deflection groove can make the optical fiber deflect by 180 degrees, which is convenient for the optical fiber to be coiled and pre-fixed. The optical fiber is in contact with the outer wall of the deflection groove, which can avoid the tensile stress of the optical fiber and the tool body due to thermal expansion and contraction during reflow soldering, and avoid physical damage to the optical fiber. The tool body is made of polyether ether ketone engineering plastic, which can be used at 250 DEG C for a long time. It can solve the problem of high-temperature reflow soldering and facilitate mold processing.
[0006] The utility model technical scheme is optimized. The adhering part is adhered to the optical assembly by high-temperature resistant double-sided adhesive tape. The high-temperature resistant double-sided adhesive tape is adhered and fixed, which is convenient and simple, and will not fail due to high temperature.
[0007] The utility model discloses a base lower side away from the extension part is provided with the limiting strip, and the limiting strip carries out the limitation to the light component, and the adhesion of positioning is convenient.
[0008] The utility model discloses a coiling shaft's top is provided with the limiting wheel hub, and the radius of coiling shaft is greater than the minimum bending radius of optical fiber, and the limiting wheel hub plays the role of limiting the position of optical fiber, avoids the optical fiber from coiling shaft and loosens, and the radius of coiling shaft is big and can guarantee that the optical fiber coiling has no physical damage.
[0009] The utility model discloses a limiting wheel hub is provided with the avoiding hole of chip mounter suction nozzle, and the avoiding hole is in turn through the limiting wheel hub, coiling shaft and base from top to bottom, and the avoiding hole is convenient for chip mounter suction nozzle to be directly adsorbed on the upper surface of light component, so as to carry out subsequent mounting process flow to light component.
[0010] The utility model discloses a lower end of the direction change groove is flush with light component, and the upper end of the direction change groove is flush with the upper end of coiling shaft, and the direction change groove is arc-shaped, and the radius of arc-shaped is greater than the minimum bending radius of optical fiber, and the direction change groove is used for guiding optical fiber, makes its 180 degree direction change, and the radius of arc-shaped direction change groove is big, can guarantee that the optical fiber has no physical damage when bending through.
[0011] The utility model discloses the inner wall of the lower end of the direction change groove is horizontal and forms the fulcrum convenient for the entry of optical fiber, and the fulcrum can play the role of supporting optical fiber before entering the direction change groove, and gives the curved optical fiber a fulcrum, so that the optical fiber can gently transition into the direction change groove.
[0012] The utility model discloses the outer wall of the upper end of the direction change groove is convex and forms the fixed part, and the optical fiber is fixed by high temperature resistant adhesive tape at the fixed part, and after the optical fiber comes out from the direction change groove, is fixed together with the upper wall of the direction change groove by high temperature resistant adhesive tape at the fixed part, and then realizes the fixed with the tool body, avoids the displacement of optical fiber in the direction change groove.
[0013] The utility model discloses that the optical fiber is located in the direction change groove and is attached with the outer wall of the direction change groove, can avoid the tensile stress of optical fiber and tool body due to thermal expansion and contraction when reflow soldering, plays the role of protecting optical fiber.
[0014] The utility model discloses that the extension part is provided with two end fixed holes of optical fiber, and the optical fiber is clockwise coiled on the coiling shaft, and the end of the optical fiber is inserted from one end fixed hole and is taken out from another end fixed hole, and the optical fiber that is coiled from the coiling shaft leaves a proper length, and then is taken out from two end fixed holes, and plays the role of fixing optical fiber through the change of direction.
[0015] The utility model discloses a beneficial effect compared with prior art is:
[0016] The technical scheme of the utility model discloses through setting up the structure of the adhesion part and the coiling shaft, can realize the connection of tooling body and optical assembly, and the coiling pre-fixing of light is carried out, in order to facilitate the subsequent process flow, through setting up the structure of the direction change groove, can make the fiber realize 180's direction change, facilitate the coiling pre-fixing of fiber, and the outer wall of fiber and direction change groove is adhered, can avoid the tensile stress of fiber and tooling body because of thermal expansion and cold shrink when reflow soldering, avoids the physical damage of fiber, through the tooling body adopting the polyether ether ketone engineering plastics material, can use for a long time under 250 DEG C, can solve the problem of high temperature reflow soldering, also facilitate the mould processing. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the three-dimensional schematic diagram of the utility model Figure 1 ;
[0018] Figure 2 It is the three-dimensional schematic diagram of the utility model Figure 2 ;
[0019] Figure 3 It is the elevation schematic diagram of the utility model;
[0020] Among them: 1 - base, 2 - adhesion part, 3 - limit strip, 4 - fulcrum, 5 - direction change groove, 6 - fixed part, 7 - coiling shaft, 8 - limit wheel hub, 9 - end fixed hole, 10 - avoiding hole, 11 - high temperature resistant adhesive tape, 12 - tooling body, 13 - optical assembly, 14 - fiber. DETAILED DESCRIPTION
[0021] The technical scheme in the utility model embodiment will be described in detail below. Figures 1-3 , to the utility model embodiment technical scheme detailed description. Example 1
[0022] As Figures 1-3 shown, the utility model discloses a kind of for ball grid array optical assembly fiber fixed disc fiber tooling, including tooling body 12 and the optical assembly 13 with fiber 14, through tooling body 12 realizes to fiber 14 is coiled and pre-fixed, in order to carry out subsequent flow.
[0023] The optical assembly 13 in the embodiment is prior art, receives and emits optical signal by fiber 14, fiber 14 is connected with the optical chip inside optical assembly 13 by glue, and the connection mode is prior art.
[0024] As Figures 1-2As shown, the tool body 12 in this embodiment includes a base 1 and an extension part installed on one side wall of the base 1, the extension part is integrally formed with the base 1, and the other parts of the base 1 are also integrally formed, the tool body 12 is made of polyether ether ketone engineering plastic, which can be used at 250℃ for a long time, which can solve the problem of high-temperature reflow soldering and facilitate mold processing.
[0025] The upper surface of the base 1 in this embodiment is integrally formed with a coiled shaft 7, which is used for coiling the optical fiber 14, and the optical fiber 14 is coiled in the clockwise direction for a proper number of turns, it should be noted that the coiled shaft 7 is cylindrical, and the radius of the cylinder is greater than the minimum bending radius of the optical fiber 14, so that the optical fiber 14 after coiling can not be physically damaged.
[0026] Further, the upper end of the coiled shaft 7 is fixedly installed with a limiting hub 8, which is a cylindrical block, and the radius of the limiting hub 8 is greater than that of the coiled shaft 7, so that the limiting hub 8 limits the coiled optical fiber 14 and prevents the coiled optical fiber 14 from loosening.
[0027] The lower surface of the base 1 in this embodiment is the bonding part 2 of the optical assembly 13, and the high-temperature resistant double-sided adhesive tape is bonded on the bonding part 2, when bonding with the optical assembly 13, only the paper on the outside of the high-temperature resistant double-sided adhesive tape needs to be torn off, and then the optical assembly 13 can be bonded.
[0028] The lower surface of the base 1 in this embodiment is integrally formed with a limiting strip 3, which is located on the side of the base 1 away from the extension part, and through the positioning action of the limiting strip 3, the optical assembly 3 can be bonded with the high-temperature resistant double-sided adhesive tape on the lower surface of the base 1.
[0029] Further, after the coiling and pre-fixing are completed, subsequent automatic patching and high-temperature reflow soldering are needed, and the patching machine is needed for automatic patching, in order to facilitate the work of the patching machine, the limiting hub 8 is provided with a avoiding hole 10, the avoiding hole 10 penetrates the limiting hub 8, the coiled shaft 7 and the base 1 from top to bottom, at this time the avoiding hole 10 reaches the wall surface of the optical assembly 13, so that the optical assembly 13 can be directly operated through the avoiding hole 10.
[0030] Further, the lower surface of the base 1 is penetrated by the avoiding hole 10, and the high-temperature resistant double-sided adhesive tape also needs to be opened at the position corresponding to the avoiding hole 10, which does not affect the continuous penetration of the avoiding hole 10, and the suction nozzle of the patching machine can directly pass through the avoiding hole 10 to adsorb the upper surface of the optical assembly 13, so as to facilitate the patching process of the optical assembly 13.
[0031] As Figures 1-3As shown, the extension part extends outward through the side wall of the base 1, and a turning groove 5 for passing the optical fiber 14 is formed at the outermost end of the extension part. The turning groove 5 is in the shape of a circular arc, the lower end of the turning groove 5 faces the optical fiber 14 of the optical assembly 13, and the upper end of the turning groove 5 faces the winding shaft 7. Therefore, the optical fiber 14 can enter the turning groove 5 through the lower end of the turning groove, and then extend out through the upper end. The optical fiber 14 is turned by 180° to be wound on the winding shaft 7.
[0032] In this embodiment, the turning groove 5 is in the shape of a circular arc, and the radius of the circular arc is greater than the minimum bending radius of the optical fiber 14. Therefore, when the optical fiber 14 is guided through the turning groove 5 to be turned by 180°, the bending of the optical fiber 14 will not cause physical damage. The turning groove 5 is formed by concave, and the turning groove 5 has solid walls on both sides, which are defined as the inner wall close to the base 1 and the outer wall away from the base 1.
[0033] Further, the inner and outer walls of the lower end of the turning groove 5 are flush with the optical assembly 13. The inner wall of the lower end of the turning groove is in a horizontal shape, forming a fulcrum 4 for passing the optical fiber 14. The optical fiber 14 is guided through the fulcrum 4 and then enters the turning groove 5. Because of the existence of the fulcrum 4, it can avoid the optical fiber 14 being suspended after bending. The optical fiber 14 entering the turning groove 5 will not be smooth and natural.
[0034] Further, the distance between the inner wall and the outer wall of the lower end of the turning groove 5 is enlarged, so that the opening of the lower end of the turning groove 5 is larger. After the optical fiber 14 is guided through the fulcrum 4 and supported, it can be more smoothly and naturally transitioned into the turning groove 5 by cooperating with the arc angle of the inner wall.
[0035] Further, the upper end of the turning groove 5 is flush with the upper end of the winding shaft 7, and the opening direction of the upper end is horizontal. Therefore, the inner and outer walls of the upper end are both horizontal. When the optical fiber 14 extends out through the upper end of the turning groove 5, it is also horizontal, which is convenient for subsequent manual winding of the optical fiber 14 on the winding shaft 7.
[0036] Further, the outer wall of the upper end of the turning groove 5 protrudes outward by a part. Therefore, from the elevation, the outer wall of the upper end of the turning groove 5 is longer than the inner wall. The protruding part is a fixed part 6 of the optical fiber 14. The fixed part 6 provides a position for winding the high-temperature-resistant adhesive tape 11. The high-temperature-resistant adhesive tape 11 can be used to bond and fix the optical fiber 14 to the outer wall of the upper end of the turning groove 5. This can prevent the optical fiber 14 from being displaced and coming out of the turning groove 5.
[0037] In this embodiment, the optical fiber 14 extends into the turning groove 5 from the lower end of the turning groove 5, and then extends out from the upper end of the turning groove 5. It should be noted that after being fixed by the high-temperature-resistant adhesive tape 11, the optical fiber 14 located in the turning groove 5 keeps adhering to the outer wall of the turning groove 5. Cooperating with the toughness of the optical fiber 14 itself, the directionality and bending shape of the optical fiber 14 can be always maintained.
[0038] Further, since the optical fiber 14 keeps in contact with the outer wall of the change direction groove 5, the tensile stress caused by thermal expansion and contraction of the optical fiber 14 and the tool body 12 during reflow soldering can be avoided, and the optical fiber 14 can be better protected from physical damage.
[0039] In the embodiment, the optical fiber 14 extends from the change direction groove 5, and after being fixed by the high-temperature-resistant adhesive tape 11 wound around the fixed part 6, the optical fiber 14 has a relatively long length. The optical fiber 14 is manually wound clockwise to be coiled on the coiling shaft 7 from top to bottom, and the number of coils needs to meet the specified requirements.
[0040] Further, the optical fiber 14 has a small length after being coiled, which is used to fix the end of the optical fiber 14. The specific fixing method is realized through the end fixing hole 9 on the extension part.
[0041] In the embodiment, two end fixing holes 9 are provided on the extension part, and the two end fixing holes 9 are in communication with each other. The end of the optical fiber 14 enters from one end fixing hole 9 and then passes out from the other end fixing hole 9. Since the optical fiber 14 is elastic, the optical fiber 14 is bent to generate a counterforce through the two end fixing holes 9, thereby realizing the fixing effect. Thus, the pre-fixing of the optical fiber 14 and the optical assembly 13 is completed to facilitate subsequent processes such as mounting by a chip mounter.
[0042] In the embodiment, after the tool body 12, the optical assembly 13 and the optical fiber 14 are pre-fixed, the whole is reflow soldered on the PCB in the optical module. During the process, the optical fiber 14 is not physically damaged due to the pre-fixing by coiling. After the soldering is completed, the tool body 12 needs to be removed from the optical assembly 13, and then the optical fiber of the PCB and other devices is fused by an optical fiber fusion machine.
[0043] Further, the high-temperature-resistant adhesive tape 11 and the high-temperature-resistant double-sided adhesive tape can both work normally at a certain high temperature to meet the high-temperature working environment during reflow soldering.
[0044] In the embodiment, the tool body 12 needs to be disassembled after the optical assembly 13 is soldered. During disassembly, the optical fiber 14 is loosened from the end fixing hole 9, and the high-temperature-resistant adhesive tape 11 is peeled off from the fixed part 6. Then, the optical fiber 14 is separated from the tool body 12, and the tool body 12 and the optical assembly 13 are separated from the adhesive part 2 by force. The whole disassembly process will not damage the optical assembly 13.
[0045] In the embodiment, the tool body 12 can avoid damaging the optical assembly 13 and the optical fiber 14 during the process, greatly reduce the loss, improve the efficiency, and the tool body 12 is detachable, so it can be reused.
[0046] Further, when reused, if the high-temperature-resistant double-sided adhesive tape of the bonding part 2 needs to be replaced due to insufficient adhesion, the optical assembly 13 is avoided to be bonded unstably, and the subsequent process is affected, and similarly, the high-temperature-resistant adhesive tape 11 also needs to be replaced when the adhesion is insufficient.
[0047] The disc fiber tool for fixing the optical fiber of the ball grid array optical assembly in the embodiment is as follows:
[0048] First, take a tool body 12 and an optical assembly 13, tear off the paper of the high-temperature-resistant double-sided adhesive tape on the lower surface of the base 1, take the optical assembly 13, and make the optical fiber 14 face the extension part, then position the optical assembly 13 and the base 1 by the constraint of the limiting strip 3, and then make the optical fiber 14 extend from the lower end of the turning groove 5 and then extend from the upper end, adjust the optical fiber 14 to make it fit the outer wall of the turning groove 5, fix the optical fiber 14 by the fixing part 6 of the high-temperature-resistant adhesive tape 11 at the upper end of the turning groove 5, and prevent the optical fiber 14 in the turning groove 5 from moving.
[0049] Then manually pass the optical fiber 14 extending from the moving groove 5 from top to bottom and coil it on the coiling shaft 7, after coiling is completed, pass the end of the optical fiber 14 from one end fixing hole 9 on the extension part, and then pass it from another end fixing hole 9, realize the fixation of the optical fiber 14, and thus complete the pre-fixation of the optical fiber 14, so as to facilitate the subsequent reflow soldering process.
[0050] The above embodiment is only for illustrating the technical idea of the present application, and cannot limit the protection scope of the present application, and any modification made on the basis of the technical solution according to the technical idea of the present application falls within the protection scope of the present application.
Claims
1. A disc fiber tool for ball grid array optical assembly fiber fixation, comprising a tool body (12) and an optical assembly (13) having optical fibers (14), the optical assembly (13) being bonded to the tool body (12), characterized in that: The tool body (12) is made of polyether ether ketone engineering plastic, and the tool body (12) comprises a base (1) and an extension part, the extension part is arranged on the side wall of the base (1), the lower part of the base (1) is provided with an adhesive part (2) of a light assembly (13), the upper part of the base (1) is provided with a coiled shaft (7), the extension part is provided with a turning groove (5) for turning the optical fiber (14) by 180 degrees, and the extension part is further provided with an end fixing hole (9) of the optical fiber (14).
2. The disc fiber tool for ball grid array optical assembly fiber fixation of claim 1, wherein: The adhesive part (2) is adhered to the light assembly (13) by high-temperature-resistant double-sided adhesive tape.
3. The disc fiber tool for ball grid array optical assembly fiber fixation of claim 1, wherein: The side of the base (1) away from the extension part is provided with a limiting strip (3).
4. The disc fiber tool for ball grid array optical assembly fiber fixation of claim 2, wherein: The top of the coiled shaft (7) is provided with a limiting hub (8), and the radius of the coiled shaft (7) is greater than the minimum bending radius of the optical fiber (14).
5. The disc fiber tool for ball grid array optical assembly fiber fixation of claim 4, wherein: The limiting hub (8) is provided with a patch machine suction nozzle avoiding hole (10), and the avoiding hole (10) penetrates the limiting hub (8), the coiled shaft (7) and the base (1) from top to bottom.
6. The disc fiber tool for ball grid array optical assembly fiber fixation of claim 1, wherein: The lower end of the turning groove (5) is flush with the light assembly (13), the upper end of the turning groove (5) is flush with the upper end of the coiled shaft (7), the turning groove (5) is in the form of a circular arc, and the radius of the circular arc is greater than the minimum bending radius of the optical fiber.
7. The disc fiber tool for ball grid array optical assembly fiber fixation of claim 6, wherein: The inner wall of the lower end of the turning groove (5) is in the form of a horizontal fulcrum (4) for facilitating the entry of the optical fiber (14).
8. The disc fiber tool for ball grid array optical assembly fiber fixation of claim 6, wherein: The outer wall of the upper end of the turning groove (5) is protruded to form a fixing part (6), and the optical fiber (14) is adhered and fixed by the high-temperature-resistant adhesive tape (11) at the fixing part (6).
9. The disc fiber tool for ball grid array optical assembly fiber fixation of claim 6, wherein: The optical fiber (14) is located in the turning groove (5) and adheres to the outer wall of the turning groove (5).
10. The disc fiber tool for ball grid array optical assembly fiber fixation of claim 1, wherein: The extension part is provided with two end fixing holes (9) of the optical fiber (14), the optical fiber (14) is coiled clockwise on the coiled shaft (7), the end of the optical fiber (14) is inserted into one end fixing hole (9) and is inserted out of the other end fixing hole (9).