Branching guide device for optical cable production

Abstract

The utility model discloses a branching guide device for optical cable production. The branching guide device comprises a fiber gathering mold disc, a fiber gathering base and a buffer connecting rod. The fiber gathering mold disc is in axial guiding sliding connection with the buffer connecting rod; the buffer connecting rod is fixedly connected with the fiber gathering base; a pressure spring is sleeved outside the buffer connecting rod; a cable core wire passing hole is formed in the center of the fiber gathering mold disc, a plurality of planetary holes are uniformly distributed in the periphery of the fiber gathering mold disc in the circumferential direction, planetary units are arranged in the fiber gathering mold disc, and fiber wire passing holes are formed in the middles of the planetary units; at least three tension springs are evenly distributed in the planetary hole in the circumferential direction, the outer ends of the tension springs are fixedly connected with the fiber gathering mold disc, and the inner ends of the tension springs are fixedly connected with the planetary unit, so that the planetary unit can elastically shift and reset in the planetary hole in the radial direction. The branching guide device for optical cable production is ingenious in design, the three-dimensional buffering performance is achieved during paying off of fiber reinforcers, paying off is more stable and reliable, distribution in optical cables is more uniform, and product quality is greatly improved.

Description

Technical Field

[0001] This utility model relates to an optical fiber and cable production equipment, and more particularly to a branching and guiding device in the production of optical fiber and cable. Background Technology

[0002] With the widespread adoption of the global internet and the accelerated pace of informatization, global communication demand continues to grow, driving the sustained expansion of the fiber optic cable market. Countries are increasing investment in building communication infrastructure and upgrading network technologies, promoting the development of the fiber optic cable industry. However, to meet the further communication needs of more countries, the fiber optic cable industry needs to continuously conduct technological research and innovation in materials, manufacturing processes, and cable design to further reduce the cost and improve the performance of fiber optic cable products. For fiber optic cable manufacturers, improvements in manufacturing processes can significantly help reduce production costs. Currently, aramid fiber and glass fiber are commonly used fiber reinforcement materials in optical cable production. They have advantages such as high mechanical strength, good heat resistance, and good corrosion resistance. They are often used as the main load-bearing components in optical cable production. However, due to the influence of their winding method, the unwinding process will pass through the yarn bobbin turning point multiple times. Combined with the passive yarn unwinding auger that is the mainstream in the optical cable industry, the double influence of the two causes the fiber reinforcement to shake when passing through the turning point. During the production process, especially at the fiber die, fiber fly-offs are prone to occur. Fiber fly-offs will cause loss of fiber linear density in the finished optical cable, affecting the performance of the optical cable and causing customer complaints. Excessive accumulation will cause problems such as optical cable bulging and optical cable breakage when brought into the die, resulting in defects and increasing the production cost of optical cable. This is especially obvious when using glass fiber.

[0003] In optical cable production, the splitter / guiding device is a core component used to precisely bundle multiple dispersed optical fibers or fiber units into a bundle and guide it into the sheath extrusion process. Its design directly affects the optical cable's geometry, mechanical properties, and signal transmission quality.

[0004] A typical fiber distribution guide device includes a plate-shaped fiber mold, which is fixed on a frame. The fiber mold has cable core passage holes, and several fiber distribution holes are evenly distributed around the periphery of the cable core passage holes. The cable core passes through the cable core passage holes, and several fiber bundles pass through the several fiber distribution holes respectively. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a cleverly designed fiber optic cable production splitter guide device, which enables the fiber reinforcement to have three-dimensional buffer performance, making the laying more stable and reliable, and the distribution in the fiber optic cable more uniform, thus greatly improving product quality.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0007] A fiber optic cable production splitter guide device includes a polyfiber mold, a polyfiber base, and a buffer connecting rod;

[0008] The main body of the polyfiber base is cylindrical; the main body of the polyfiber mold plate is plate-shaped, and its periphery matches the polyfiber base. A plurality of buffer rod holes are evenly distributed circumferentially around the periphery of the polyfiber mold plate. Each buffer rod hole contains a buffer connecting rod, the outer end of which has a flange. The polyfiber mold plate and the buffer connecting rod form an axially outwardly limiting and axially guiding sliding connection. The inner end of the buffer connecting rod is fixedly connected to the outer end face of the cylindrical polyfiber base. A compression spring is sleeved around the buffer connecting rod, the outer end of which supports the inner end face of the polyfiber mold plate, and the inner end of which supports the outer end face of the polyfiber base.

[0009] The fiber core die is provided with a cable core through hole in the center, and a number of planetary holes are evenly distributed around the periphery of the cable core through hole. A planetary unit is provided in the middle of the planetary holes, and a fiber through hole is provided in the middle of the planetary unit.

[0010] At least three radially extending tension springs are evenly distributed circumferentially inside the planetary bore. The outer ends of the tension springs are fixedly connected to the polyfiber mold plate, and the inner ends are fixedly connected to the outer wall of the planetary unit, so that the planetary unit can be elastically offset and reset radially inside the planetary bore.

[0011] Furthermore, the planetary bore is provided with at least three radially outwardly extending tension spring grooves evenly distributed around its circumference, and the tension spring is matched and disposed within the tension spring grooves.

[0012] Furthermore, the buffer connecting rod is threadedly connected to the polyfiber base.

[0013] Furthermore, the outer flange of the buffer connecting rod is provided with a turning drive structure, which includes an end face drive structure and / or a side drive structure. The end face drive structure is one of a slotted groove, a cross groove, an external hexagonal groove, an internal hexagonal groove, a square groove, or a Torx groove. The side drive structure is a side knurled structure.

[0014] Furthermore, some of the fiber through holes include aramid fiber through holes with a circular inner cross-section and glass fiber through holes with a polygonal inner cross-section.

[0015] Furthermore, the cross-sectional shape of the cable core through hole is circular or rectangular.

[0016] Furthermore, a central hole movable component is provided in the center of the polyfiber mold disk, the polyfiber mold disk is provided with a central hole, and the central hole movable component is detachably fixed in the central hole;

[0017] The planetary unit includes a planetary unit mother seat and a planetary unit movable sub-component. The main body of the planetary unit mother seat is cylindrical, and the planetary unit movable sub-component is detachably fixed inside the planetary unit mother seat. The fiber guide hole is provided in the center of the planetary unit movable sub-component.

[0018] Furthermore, the main body of the movable component with the central hole is cylindrical, and a first limiting flange is provided at the outer end. The movable component with the central hole is provided with a first rubber ring mounting groove on the outer peripheral surface that is connected to the polyfiber mold plate. A first rubber ring is matched and installed in the first rubber ring mounting groove. The movable component with the central hole and the polyfiber mold plate are detachably fixedly connected through the first rubber ring and the first limiting flange.

[0019] The planetary unit movable component is cylindrical in shape, with a second limiting flange at its outer end. The planetary unit movable component has a second rubber ring mounting groove on its outer circumferential surface that connects to the planetary unit female seat. A second rubber ring is matched and installed in the second rubber ring mounting groove. The planetary unit movable component and the planetary unit female seat are detachably fixedly connected through the second rubber ring and the second limiting flange.

[0020] Furthermore, three tension springs are provided.

[0021] This invention addresses the significant tension fluctuations and jerking issues during fiber reinforcement cable laying, particularly severe under high tension. This leads to intense friction with the fiber optic mold, causing fiber shavings, cable bulging, and breakage. A cleverly designed, unique buffer structure provides three-dimensional buffering for the fiber reinforcement cable laying, resulting in more stable and reliable laying, more even distribution within the cable, better wrapping of the cable core, improved cable aesthetics, and stable performance, significantly enhancing product quality.

[0022] Compared with the prior art, this utility model has the following advantages:

[0023] (1) This utility model addresses the shortcomings of the yarn feeding augers widely used in optical cable manufacturing plants. During the yarn feeding process, the passive yarn feeding and the reciprocating folding of the fiber reinforcement during yarn feeding cause large changes in the tension of the fiber reinforcement during yarn feeding, resulting in jumping. This makes it easy to generate a lot of fiber fly-offs when passing through the polyfiber die before the extruder. The technical solution of this patent provides a clever buffer structure for the polyfiber die. The axial buffer adjustment capability is obtained through the buffer connecting rod guide and the compression spring, and the radial buffer adjustment capability of the planetary unit is obtained through the radial multi-directional tension spring and the radial gap of the planetary hole. This constitutes a three-dimensional effective buffer adjustment, thereby effectively reducing the generation of defects such as fly-offs, ensuring the performance of optical cables, and reducing production costs.

[0024] (2) The needle hole of this utility model has a variety of designs. The needle hole has a corresponding design according to the shape of the cable core. The needle hole is also different according to the different fiber reinforcements. Aramid fiber uses a circular needle hole, and glass fiber uses a polygonal needle hole to reduce flying filaments and ensure the formation of optical cable.

[0025] (3) Based on different scenario requirements, we designed a detachable structure for the central hole moving part and the planetary unit moving part, which can replace different moving parts according to different requirements.

[0026] (4) During the production process, these holes are also easy to wear. After adopting the detachable structure, it is not only convenient for daily disassembly and cleaning, but also easier to replace after wear. At the same time, when matching different styles of optical cables, only the moving parts of different styles need to be replaced, and it is not necessary to configure a polyfiber mold for each style. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the optical cable production splitter guide device of this utility model.

[0028] Figure 2 This is a schematic diagram of the structure of a polyfiber mold.

[0029] Figure 3 This is a schematic diagram of the structure of the movable part with the center hole.

[0030] Figure 4 This is a schematic diagram of the structure of the planetary unit's moving sub-components.

[0031] Figure 5 A schematic diagram of the assembly of the planetary unit mother seat and the planetary unit moving parts.

[0032] Figure 6 This is a schematic diagram showing the planetary element in the planetary aperture before it shifts when subjected to radial force.

[0033] Figure 7 This is a schematic diagram showing the radial displacement of a planetary element after it is subjected to a radial force in a planetary aperture.

[0034] In the picture:

[0035] 1. Polyfiber mold plate 101, center hole

[0036] 102. Planetary hole; 1021. Tension spring groove

[0037] 103. Buffer rod hole 2. Center hole movable part

[0038] 201. Cable core through hole; 202. First limiting flange

[0039] 203, First rubber ring mounting groove; 3, Planetary unit

[0040] 301. Planetary Unit Mother Component; 302. Planetary Unit Moving Component

[0041] 3021, Second limiting flange; 3022, Second rubber ring mounting groove

[0042] 303, Fiber Wire Hole 4, Tension Spring

[0043] 5. Buffer connecting rod; 6. Polyfiber base

[0044] 7. Compression Spring Detailed Implementation

[0045] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0046] Figure 1 A fiber optic cable production splitter guide device is shown, comprising a fiber optic mold plate 1, a fiber optic base 6, and a buffer connecting rod 5.

[0047] The main body of the polyfiber base 6 is cylindrical; the main body of the polyfiber mold plate 1 is plate-shaped, such as... Figure 2 As shown, its periphery matches the polyfiber base 6. Six buffer rod holes 103 are evenly distributed circumferentially around the periphery of the polyfiber mold disk 1. Each buffer rod hole 103 contains a buffer connecting rod 5. The outer end of the buffer connecting rod 103 is provided with a flange. The polyfiber mold disk 1 and the buffer connecting rod 5 form an axially outward limiting and axially guiding sliding connection. The inner end of the buffer connecting rod 5 is connected to the outer end face of the cylindrical polyfiber base 6 by a thread to form a detachable fixed connection. A compression spring 7 is sleeved around the buffer connecting rod 5. The outer end of the compression spring 7 is supported on the inner end face of the polyfiber mold disk 1, and the inner end is supported on the outer end face of the polyfiber base 6.

[0048] The outer flange of the buffer connecting rod 5 is provided with a turning drive structure. This turning drive structure has a cross groove on the outer end face of the flange and knurled edges on the side face. Alternatively, the turning drive structure can have one of the following on the outer end face: a slotted groove, an external hexagonal groove, an internal hexagonal groove, a square groove, or a star-shaped groove. The rebound force of the compression spring 7 can be adjusted by regulating the turning drive structure at the outer end of the buffer connecting rod 5, thereby obtaining optimal longitudinal buffering.

[0049] In this way, during the production of optical cables, the fiber reinforcement members that are shaking during the laying process are given a longitudinal (axial) buffer space, which reduces the fiber filaments generated by the severe longitudinal shaking friction between the fiber reinforcement members and the polyfiber mold 1.

[0050] However, depending on the design, other numbers of buffer rod holes 5 can also be used.

[0051] The polyfiber mold 1 has a central hole 101, and the movable part 2 of the central hole is detachably fixed in the central hole 101. Figure 3 As shown, the main body of the movable component 2 with a central hole is cylindrical, and a first limiting flange 202 is provided at the outer end. The movable component 2 with a central hole has a first rubber ring mounting groove 203 on its outer peripheral surface that connects to the polyfiber mold plate 1. A first rubber ring is matched and installed in the first rubber ring mounting groove 203. The first limiting flange 202 enables the movable component 2 with a central hole to be locked in an accurate position. When the movable component 2 with a central hole is installed in the central hole 101, the first rubber ring is in a state of radial compression by the inner wall of the central hole 101 and the movable component 2 with a central hole, thereby providing sufficient damping to prevent the movable component 2 with a central hole from moving axially. Therefore, the movable component 2 with a central hole and the polyfiber mold plate 1 are detachably fixedly connected by the first rubber ring and the first limiting flange 202.

[0052] The center hole movable part 2 has a cable core passage hole 201 with a rectangular cross-section (depending on the type of cable core, the cable core passage hole 201 can also be circular or other shapes).

[0053] The polyfiber mold plate 101 has six planetary holes 102 evenly distributed around the periphery of the central hole 101, and a planetary unit 3 is provided in the middle of the planetary holes 102, and a fiber thread passage hole is provided in the middle of the planetary unit 3.

[0054] Planetary unit 3 includes a planetary unit mother seat 301 and a planetary unit movable component 302. The planetary unit mother seat 301 is cylindrical in shape, and the planetary unit movable component 302 is detachably fixed inside the planetary unit mother seat 302. A fiber guide hole 303 is provided in the center of the planetary unit movable component 302. Figure 4 As shown, the planetary unit movable component 302 has a cylindrical body and a second limiting flange 3021 at its outer end. A second rubber ring mounting groove 3022 is provided on the outer circumferential surface of the planetary unit movable component 302 that connects to the planetary unit female seat 301. A second rubber ring is fitted within the second rubber ring mounting groove 3022. Figure 5 The second limiting flange 3021 enables the planetary unit movable component 302 to be locked in an accurate position. When the planetary unit movable component 302 is installed in the planetary unit mother seat 301, the second rubber ring is in a state of radial compression by the inner wall of the planetary unit mother seat 301 and the planetary unit movable component 302, thereby providing sufficient damping to prevent the planetary unit movable component 302 from moving axially. The planetary unit movable component 302 and the planetary unit mother seat 301 are detachably fixedly connected by the second rubber ring and the second limiting flange 3021.

[0055] Planetary unit 3 is disposed within planetary bore 102. The diameter of planetary unit 3 is 50-80% of the diameter of planetary bore 102, allowing planetary unit 3 a certain radial movement space within planetary bore 102. Three radially outwardly extending tension spring grooves 1021 are evenly distributed circumferentially within planetary bore 1022. Each tension spring 4 is fitted within each groove 1021. The outer end of the tension spring 4 is fixedly connected to the outer end face of the groove 1021, and the inner end is fixedly connected to the outer wall of the planetary unit, allowing the planetary unit to elastically offset and return to its original position radially within the planetary bore. Figure 5 , Figure 6 As shown, Figure 6 As shown, the planetary unit 3 in the planetary aperture 102 is not subjected to radial force at the beginning of the line crossing. The planetary unit 3 is still in the center position of the planetary aperture 102 and has not undergone radial displacement. Figure 7 This means that after the planetary unit 3 in the planetary aperture 102 is subjected to radial force in the working line, the planetary unit 3 has undergone radial displacement.

[0056] Depending on the design, the planetary bore 102 may not have a tension spring groove 1021, meaning it may only have a circular planetary bore 102. The outer end of the tension spring 4 is fixedly connected to the inner wall of the planetary bore 102. In this case, the inner diameter of the planetary bore 102 needs to be larger. As long as the outer end of each set of tension springs is connected to the polyfiber mold plate 1 and the inner end is connected to the planetary unit 3, the planetary unit 3 can be radially elastically offset and reset within the planetary bore 102.

[0057] The aforementioned planetary aperture 102 can be configured with three tension springs 4 evenly distributed around its circumference, or it can be configured with four tension springs 4 evenly distributed around its circumference.

[0058] The aforementioned fiber optic mold 101 has six planetary holes 102 evenly distributed around the center hole 101 in the circumferential direction. Alternatively, it may have 2, 4, 8, 10, 12 or 24 holes depending on the optical cable structure.

[0059] The six planetary unit movable components 302 include three aramid fiber movable components and three glass fiber movable components arranged at intervals. When using aramid fibers, because aramid is soft and round, the wire passage hole is circular. When using glass fibers, because glass fibers are rigid, the wire passage hole is polygonal. The polygonal side is 1 to 2 times the width of the glass fiber to reduce deformation friction and fiber shavings. The inner cross-section of the fiber wire passage hole 303 of the aramid fiber movable component is circular, and the inner cross-section of the fiber wire passage hole 303 of the glass fiber movable component is polygonal. Different shapes of fiber wire passage holes 303 can also be used to adapt to different fibers.

[0060] The detachable fixing structure of the aforementioned central hole movable part 2 and planetary unit movable sub-part 302 can also be set as a fixed integrated structure depending on the design requirements.

[0061] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A branching and guiding device for optical cable production, characterized in that: Includes a polyfiber mold plate, a polyfiber base, and a buffer connecting rod; The main body of the polyfiber base is cylindrical; the main body of the polyfiber mold plate is plate-shaped, and its periphery matches the polyfiber base. A plurality of buffer rod holes are evenly distributed circumferentially around the periphery of the polyfiber mold plate. Each buffer rod hole contains a buffer connecting rod, the outer end of which has a flange. The polyfiber mold plate and the buffer connecting rod form an axially outwardly limiting and axially guiding sliding connection. The inner end of the buffer connecting rod is fixedly connected to the outer end face of the cylindrical polyfiber base. A compression spring is sleeved around the buffer connecting rod, the outer end of which supports the inner end face of the polyfiber mold plate, and the inner end of which supports the outer end face of the polyfiber base. The fiber core die is provided with a cable core through hole in the center, and a number of planetary holes are evenly distributed around the periphery of the cable core through hole. A planetary unit is provided in the middle of the planetary holes, and a fiber through hole is provided in the middle of the planetary unit. At least three radially extending tension springs are evenly distributed circumferentially inside the planetary bore. The outer ends of the tension springs are fixedly connected to the polyfiber mold plate, and the inner ends are fixedly connected to the outer wall of the planetary unit, so that the planetary unit can be elastically offset and reset radially inside the planetary bore.

2. The apparatus as described in claim 1, characterized in that: The planetary bore is provided with at least three radially outwardly extending tension spring grooves evenly distributed around its circumference. The tension spring is matched and disposed in the tension spring groove, and the outer end of the tension spring is fixedly connected to the outer end face of the tension spring groove.

3. The apparatus as described in claim 1, characterized in that: The buffer connecting rod is threadedly connected to the polyfiber base.

4. The apparatus as described in claim 3, characterized in that: The outer flange of the buffer connecting rod is provided with a turning drive structure, which includes an end face drive structure and / or a side drive structure. The end face drive structure is one of a slotted groove, a cross groove, an external hexagonal groove, an internal hexagonal groove, a square groove, or a Torx groove. The side drive structure is a side knurled structure.

5. The apparatus as claimed in claim 1, characterized in that: The fiber through holes include a portion of aramid fiber through holes with a circular inner cross-section and another portion of glass fiber through holes with a polygonal inner cross-section.

6. The apparatus as claimed in claim 1, characterized in that: The cross-sectional shape of the cable core through hole is circular or rectangular.

7. The apparatus according to any one of claims 1 to 6, characterized in that: The polyfiber mold disk is also provided with a central hole movable component. The polyfiber mold disk is provided with a central hole, and the central hole movable component is detachably fixed in the central hole. The planetary unit includes a planetary unit mother seat and a planetary unit movable sub-component. The main body of the planetary unit mother seat is cylindrical, and the planetary unit movable sub-component is detachably fixed inside the planetary unit mother seat. The fiber guide hole is provided in the center of the planetary unit movable sub-component.

8. The apparatus as claimed in claim 7, characterized in that: The main body of the movable part with the central hole is cylindrical, and a first limiting flange is provided at the outer end. The movable part with the central hole is provided with a first rubber ring mounting groove on the outer peripheral surface that connects with the polyfiber mold plate. A first rubber ring is matched and installed in the first rubber ring mounting groove. The movable part with the central hole and the polyfiber mold plate are detachably fixedly connected through the first rubber ring and the first limiting flange. The planetary unit movable component is cylindrical in shape, with a second limiting flange at its outer end. The planetary unit movable component has a second rubber ring mounting groove on its outer circumferential surface that connects to the planetary unit female seat. A second rubber ring is matched and installed in the second rubber ring mounting groove. The planetary unit movable component and the planetary unit female seat are detachably fixedly connected through the second rubber ring and the second limiting flange.

9. The apparatus according to any one of claims 1 to 6, characterized in that: There are three tension springs.

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