Mold for coating resin on optical fiber

Abstract

The utility model discloses a mold for coating resin on an optical fiber, which comprises a flow guide structure, a flow guide channel is formed in the flow guide structure along the axial direction, and the flow guide channel is used for accommodating the optical fiber; the guiding flow channel is arranged on the upper portion of the outer side of the flow guiding structure, and the guiding flow channel extends in the axial direction of the flow guiding structure; the lower part of the outer side of the flow guide structure is provided with the annular flow channel, and the annular flow channel extends around the annular direction of the flow guide structure; wherein a plurality of feeding holes are formed in the lower portion of the flow guide structure in the annular direction, each feeding hole communicates with the annular flow channel and the flow guide channel in the radial direction of the flow guide structure, and the lower end of the flow guide channel communicates with the annular flow channel. Through the application of the utility model, the utility model provides a mold suitable for coating the resin on the optical fiber, through the special channel arrangement on the flow guide structure, the resin can be uniformly dispersed and coated on the circumferential direction of the optical fiber under proper pressure, and the eccentricity of the optical fiber caused by non-uniform coating is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber coating, in particular to a mold for optical fiber coating resin. Background Art

[0002] Currently, the production of optical cables often involves coating the optical fiber, which involves evenly applying resin to the surface of the optical fiber and then curing it. Existing coating dies are often used to guide the flow of the resin. Specifically, existing coating dies often use a self-flowing design for thin coatings and a one-side pressurized design for thicker coatings.

[0003] However, existing mold structures are prone to coating eccentricity during the coating process when the resin layer reaches a certain thickness. This can easily lead to fiber breakage during subsequent fiber connector production. Repeated adjustments are required during each production run to minimize this eccentricity, but this also results in heavy workload for operators, significant material waste, and negatively impacts production efficiency and quality. Utility Model Content

[0004] In view of this, in order to solve the above problems, the purpose of the present invention is to provide a mold for optical fiber resin coating, comprising:

[0005] A flow guiding structure, wherein a flow guiding channel is formed in the interior of the flow guiding structure along the axial direction, and the flow guiding channel is used to accommodate the optical fiber;

[0006] A guide flow channel is provided on the upper portion of the outer side of the guide structure and extends along the axial direction of the guide structure;

[0007] An annular flow channel is provided at the lower portion of the outer side of the flow guide structure and extends in an annular direction around the flow guide structure;

[0008] Among them, the lower part of the guide structure is annularly provided with a plurality of feed holes, each of which is connected to the annular flow channel and the guide channel along the radial direction of the guide structure, and the lower end of the guide channel is connected to the annular flow channel.

[0009] In another preferred embodiment, it further comprises: a mold base, wherein the mold base is sleeved on the outside of the guide structure, and a feed channel is provided on the mold base, and the feed channel is used to guide the resin to the upper end of the guide channel.

[0010] In another preferred embodiment, a limiting groove is provided on the inner side of the mold base, and a limiting protrusion is provided on the outer side of the guide structure, and the limiting protrusion is inserted into the limiting groove.

[0011] In another preferred embodiment, it further comprises: a concentric positioning component, wherein the concentric positioning component is arranged on the flow-guiding structure, and the concentric positioning component is used to make the optical fiber and the flow-guiding channel coaxially arranged.

[0012] In another preferred embodiment, the concentric positioning assembly includes: an upper concentric cover and a lower concentric cover, the upper concentric cover is arranged at the upper end of the guide structure, and the lower concentric cover is arranged at the lower end of the guide structure, the upper concentric cover and the lower concentric cover are both provided with a concentric hole, and the optical fiber is arranged through the two concentric holes in sequence from top to bottom.

[0013] In another preferred embodiment, the upper concentric cover and the lower concentric cover are both detachably connected to the flow guide structure via threads.

[0014] In another preferred embodiment, the guide flow channel includes: a transverse portion and a branch portion, the transverse portion at least partially extends along the circumferential direction of the guide structure, the upper end of the branch portion is connected to the transverse portion, and the lower end of the branch portion is connected to the circumferential flow channel.

[0015] In another preferred embodiment, the branch portion includes: a first branch and at least two second branches, the upper end of the first branch is connected to the transverse portion, the upper end of each second branch is connected to the lower end of the first branch, and the lower end of each second branch is connected to the annular flow channel.

[0016] In another preferred embodiment, the lower ends of the two second branches are arranged relatively far apart.

[0017] In another preferred embodiment, an insert is embedded in both the upper concentric cover and the lower concentric cover, and the concentric hole is opened in the insert.

[0018] Due to the adoption of the above technical solution, the present invention has the following positive effects compared with the prior art:

[0019] Through the application of the utility model, a mold suitable for resin coating of optical fibers is provided. Through the special channel setting on the guide structure, the resin can be evenly dispersed and coated on the circumference of the optical fiber under appropriate pressure, avoiding optical fiber eccentricity caused by uneven coating and ensuring the coating quality of the optical fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view schematic diagram of a flow guide structure of a mold for optical fiber resin coating according to the present invention;

[0021] Figure 2This is a schematic diagram of the back side of a flow guide structure of a mold for optical fiber resin coating according to the present invention;

[0022] Figure 3 This is a schematic diagram of a mold base for optical fiber resin coating mold of the present invention;

[0023] Figure 4 This is a schematic diagram of a concentric cover of a mold for optical fiber resin coating according to the present invention.

[0024] In the attached figure:

[0025] 1. Guide structure; 2. Guide channel; 3. Guide flow channel; 4. Annular flow channel; 5. Feed hole; 6. Mold base; 7. Feed channel; 8. Limit groove; 9. Limit protrusion; 10. Upper concentric cover; 11. Lower concentric cover; 12. Concentric hole; 13. Horizontal part; 14. Branch part; 15. First branch; 16. Second branch. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inside", "outside", "front", "back", "horizontal", and "vertical" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0028] It should be noted that the terms “horizontal” and “vertical” in the present invention are used to describe a rough positional relationship, rather than a strict “horizontal plane” or “vertical plane”.

[0029] like Figure 1 and Figure 2As shown, a mold for optical fiber resin coating of a preferred embodiment is shown, comprising: a flow guide structure 1, wherein a flow guide channel 2 is formed axially inside the flow guide structure 1, and the flow guide channel 2 is used to accommodate the optical fiber; a guide flow channel 3, wherein the upper portion of the outer side of the flow guide structure 1 is provided with a guide flow channel 3, and the guide flow channel 3 is extended along the axial direction of the flow guide structure 1; an annular flow channel 4, wherein the lower portion of the outer side of the flow guide structure 1 is provided with an annular flow channel 4, and the annular flow channel 4 is extended circumferentially around the flow guide structure 1; wherein, a plurality of feed holes 5 are opened circumferentially at the lower portion of the flow guide structure 1, and each feed hole 5 is connected to the annular flow channel 4 and the flow guide channel 2 along the radial direction of the flow guide structure 1, and the lower end of the guide channel 2 is connected to the annular flow channel 4. Furthermore, the resin is preferably injected into the guide channel 3 under the action of pressure, and then introduced into the annular channel 4 under the top-down guiding action of the guide channel 3 and evenly diffused, and further simultaneously enters the guide channel 2 through multiple feed holes 5 and achieves contact coating with the optical fiber. In particular, the coating pressure can act evenly on the circumference of the optical fiber, thereby making the resin coating uniform, ensuring that the optical fiber is in the middle of the resin coating layer.

[0030] Furthermore, as a preferred embodiment, the thickness of the resin coating layer can be adjusted by controlling the pressure.

[0031] Furthermore, as a preferred embodiment, the flow guide structure 1 is provided in a cylindrical structure, and the above-mentioned guide flow channel 3 and annular flow channel 4 are formed by concave or grooved portions on its outer surface.

[0032] like Figure 3 As shown, further, as a preferred embodiment, it also includes: a mold base 6, which is sleeved on the outer side of the guide structure 1, and a feed channel 7 is defined on the mold base 6. The feed channel 7 is used to guide the resin to the upper end of the guide channel 3. Furthermore, the feed channel 7 of the mold base 6 serves as a connection point with the resin supply device, that is, the outer end of the feed channel 7 is connected to the resin supply device, and the inner end of the feed channel 7 is connected to the middle part of the upper end of the guide channel 3.

[0033] Furthermore, as a preferred embodiment, the inner wall of the mold base 6 also constrains the peripheral space of the guide channel 3 and the annular channel 4 in the process of closely matching with a portion of the outer wall of the guide structure 1 .

[0034] Furthermore, as a preferred embodiment, the mold base 6 is provided with a hollow cylindrical structure by opening a hole therein.

[0035] Furthermore, as a preferred embodiment, a limiting groove 8 is provided on the inner side of the mold base 6, and a limiting protrusion 9 is provided on the outer side of the flow guide structure 1, and the limiting protrusion 9 is inserted into the limiting groove 8. Furthermore, through the cooperation between the limiting groove 8 and the limiting protrusion 9, the flow guide structure 1 is allowed to be installed inside the mold base 6 from top to bottom and be limited.

[0036] like Figure 4 As shown, further, as a preferred embodiment, it also includes: a concentric positioning component, the concentric positioning component is arranged on the guide structure 1, and the concentric positioning component is used to make the optical fiber and the guide channel 2 coaxially arranged.

[0037] Furthermore, as a preferred embodiment, the concentric positioning assembly includes: an upper concentric cover 10 and a lower concentric cover 11, the upper concentric cover 10 is arranged at the upper end of the guide structure 1, and the lower concentric cover 11 is arranged at the lower end of the guide structure 1, and the upper concentric cover 10 and the lower concentric cover 11 are both provided with a concentric hole 12, and the optical fiber is arranged through the two concentric holes 12 in sequence from top to bottom.

[0038] Furthermore, as a preferred embodiment, the upper concentric cover 10 and the lower concentric cover 11 are detachably connected to the diversion structure 1 via threads. Furthermore, the inner circumferences of the upper concentric cover 10 and the lower concentric cover 11 are provided with internal threads, and the upper and lower ends of the diversion structure 1 are provided with matching external threads.

[0039] Furthermore, as a preferred embodiment, knurling patterns are provided on the outer peripheries of the upper concentric cover 10 and the lower concentric cover 11 to facilitate manual installation and removal by operators.

[0040] The above description is only a preferred embodiment of the present invention and does not limit the implementation manner and protection scope of the present invention.

[0041] The present invention also has the following implementation methods based on the above:

[0042] In a further embodiment of the present invention, the guide channel 3 includes: a transverse portion 13 and a branch portion 14, the transverse portion 13 is at least partially extended along the circumferential direction of the guide structure 1, the upper end of the branch portion 14 is connected to the transverse portion 13, and the lower end of the branch portion 14 is connected to the annular channel 4.

[0043] In a further embodiment of the present invention, the transverse portion 13 is preferably a 180-degree arc-shaped channel.

[0044] In a further embodiment of the present invention, the branch portion 14 includes: a first branch 15 and at least two second branches 16, the upper end of the first branch 15 is connected to the transverse portion 13, the upper end of each second branch 16 is connected to the lower end of the first branch 15, and the lower end of each second branch 16 is connected to the annular flow channel 4.

[0045] In a further embodiment of the present invention, the lower ends of the two second branches 16 are arranged relatively far apart.

[0046] In a further embodiment of the present invention, the first branch 15 and the two second branches 16 are arranged together in a herringbone shape.

[0047] In a further embodiment of the present invention, an insert is embedded in both the upper concentric cover 10 and the lower concentric cover 11 , and the concentric hole 12 is formed in the insert.

[0048] In a further embodiment of the present invention, the insert is preferably made of tungsten steel or diamond material which is easy to accurately machine the concentric hole 12 .

[0049] In a further embodiment of the present invention, the upper concentric cover 10 and the lower concentric cover 11 may be provided with embedded openings for embedding.

[0050] The above description is only a preferred embodiment of the present invention and does not limit the implementation method and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A mold for optical fiber resin coating, characterized in that: include: A flow guiding structure, wherein a flow guiding channel is formed in the interior of the flow guiding structure along the axial direction, and the flow guiding channel is used to accommodate the optical fiber; A guide flow channel is provided on the upper portion of the outer side of the guide structure and extends along the axial direction of the guide structure; An annular flow channel is provided at the lower portion of the outer side of the flow guide structure and extends in an annular direction around the flow guide structure; Among them, the lower part of the guide structure is annularly provided with a plurality of feed holes, each of which is connected to the annular flow channel and the guide channel along the radial direction of the guide structure, and the lower end of the guide channel is connected to the annular flow channel.

2. The mold for coating optical fiber with resin according to claim 1, wherein: Also includes: The mold base is sleeved on the outside of the guide structure, and a feed channel is provided on the mold base. The feed channel is used to guide the resin to the upper end of the guide channel.

3. The mold for coating optical fiber with resin according to claim 2, wherein: A limiting groove is provided on the inner side of the mold base, and a limiting protrusion is provided on the outer side of the guide structure, and the limiting protrusion is inserted into the limiting groove.

4. The mold for coating optical fiber with resin according to claim 1, wherein Also includes: A concentric positioning component is provided on the flow guiding structure, and is used to make the optical fiber and the flow guiding channel coaxially arranged.

5. The mold for coating optical fiber with resin according to claim 4, wherein: The concentric positioning assembly includes: an upper concentric cover and a lower concentric cover, the upper concentric cover is arranged at the upper end of the guide structure, and the lower concentric cover is arranged at the lower end of the guide structure. The upper concentric cover and the lower concentric cover are both provided with a concentric hole, and the optical fiber is arranged through the two concentric holes in sequence from top to bottom.

6. The mold for coating optical fiber with resin according to claim 5, wherein: The upper concentric cover and the lower concentric cover are both detachably connected to the flow guide structure via threads.

7. The mold for coating optical fiber with resin according to claim 1, wherein The guide flow channel includes: a transverse portion and a branch portion, the transverse portion at least partially extends along the circumferential direction of the guide structure, the upper end of the branch portion is connected to the transverse portion, and the lower end of the branch portion is connected to the circumferential flow channel.

8. The mold for coating optical fiber with resin according to claim 7, wherein: The branch portion includes: a first branch and at least two second branches, the upper end of the first branch is connected to the transverse portion, the upper end of each second branch is connected to the lower end of the first branch, and the lower end of each second branch is connected to the annular flow channel.

9. The mold for coating optical fiber with resin according to claim 8, wherein The lower ends of the two second branches are arranged relatively far apart.

10. The mold for coating optical fiber with resin according to claim 5, wherein An insert is embedded in each of the upper concentric cover and the lower concentric cover, and the concentric hole is opened in the insert.

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