Optical cable secondary coating production fiber bundle vibration tube entering device and processing method thereof

Abstract

The optical cable secondary coating production fiber bundle vibration tube entering device comprises a pay-off rack and an equipment rack, and the pay-off rack is provided with a first optical fiber disc, a second optical fiber disc, a third optical fiber disc and a fourth optical fiber disc. A first transition wheel, a second transition wheel, a vibration structure, a third transition wheel, a plastic extruding machine, a warm water tank, a traction wheel and a cold water tank are sequentially arranged on the equipment frame from the input end to the output end, a take-up device is arranged at the discharging end of the cold water tank, and an auxiliary traction structure is arranged on the cold water tank. With the adoption of the structure, due to the vibration effect, when the optical fiber bundle is converged in the extruded hollow sleeve, the mutual adhesion effect of the optical fiber bundle and the extruded hollow sleeve due to friction force, static electricity and tension is weakened under the vibration effect, the separation contact state is promoted, the mutual friction is reduced, and the production requirements of high-speed production of secondary sleeves or the occupancy ratio of optical fibers in a large hollow plastic sleeve are met; therefore, high-speed and stable production of secondary plastic coating products is realized.

Description

Technical Field

[0001] The invention belongs to the technical field of optical cable processing and production equipment, and in particular relates to a fiber bundle shaking tube-entry device for secondary sheathing production of optical cables and a processing method thereof. Background Art

[0002] At present, the production line of the secondary sheathing process in optical cable production is generally less than ideal in terms of controlling the excess length of the optical fiber sheath and the excess of optical fiber. In order to increase the production speed of the second production line and to further reduce material costs, the optical fiber bundle occupies an increasingly larger space in the hollow secondary sheathing tube, exacerbating the instability of the sheath and affecting product quality.

[0003] In order to improve the adverse factors caused by the above phenomenon on product quality, it is traditionally usually to increase the pay-off tension of the optical fiber pay-off device to increase the "straightening force" between the pay-off device and the traction device, so as to get rid of or alleviate this process section. When the sleeve shrinks, its inner wall "adheres" to the optical fiber and "bends" to ensure the production of qualified final secondary sheathing products.

[0004] However, increasing the pay-off tension has certain limitations. Optical fiber is originally a very fine glass fiber. In commercial production, the thickness and strength of optical fiber are designed to extreme indicators. The force it can withstand is already as low as the limit, and it is very fragile. The degree of loaded tension is extremely limited. Too much tension can easily exceed the stress that the fine optical fiber can withstand, causing it to break and be strained, further increasing the difficulty of secondary casing production. There are obvious bottlenecks in product quality and production speed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a fiber bundle shaking tube entry device for secondary sheathing production of optical cables and a processing method thereof. Due to the shaking effect, when the optical fiber bundle merges with the extruded hollow sheath, the adhesion between them due to friction, static electricity and tension is weakened under the action of this shaking, thereby promoting a separated contact state and reducing mutual friction; at the same time, it can reduce the rubbing force of the inherent violent contraction movement of the sheath in high-speed production or smaller types of hollow tubes on the optical fiber, and prevent the optical fiber from being subjected to excessive force loss; it can ensure that the optical fiber bundle is as uniform and evenly distributed in the sheath as possible, and can make the important excess length quality index of the optical fiber sheath tend to be stable within the limited tension range of the optical fiber that can withstand a smaller optical fiber, and is more adaptable to the production requirements of high-speed production of secondary sheaths or the optical fiber occupancy ratio in large hollow plastic sheaths, so as to achieve high-speed and stable production of secondary sheathing products.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a fiber bundle vibration tube-entry device for secondary sheathing of optical cables, including a pay-off frame and an equipment frame, the pay-off frame is provided with a first optical fiber reel, a second optical fiber reel, a third optical fiber reel and a fourth optical fiber reel, the equipment frame is provided with a first transition wheel, a second transition wheel, a vibration structure, a third transition wheel, an extruder, a warm water tank, a traction wheel and a cold water tank in sequence from the input end to the output end, a wire take-up device is provided at the discharge end of the cold water tank, and an auxiliary traction structure is provided on the cold water tank. In a preferred solution, the first optical fiber disc and the second optical fiber disc correspond to the first transition wheel.

[0007] In a preferred solution, the third optical fiber disc and the fourth optical fiber disc correspond to the second transition wheel.

[0008] In a preferred solution, the vibration structure includes a vibration shaft arranged on the equipment frame, the vibration shaft is provided with a vibration wheel corresponding to the first transition wheel and the second transition wheel, and the vibration shaft is connected to the vibration source through a transmission structure.

[0009] In a preferred solution, the auxiliary traction structure includes a loading plate, a mounting frame connected to the cold water tank is provided at the bottom of the loading plate, two sets of auxiliary wheels are symmetrically provided on the loading plate, and elastic material clamping belts cooperating therewith are sleeved on the auxiliary wheels on the same side.

[0010] In a preferred solution, the auxiliary wheel is provided with a limit platform and a matching groove that match the material clamping elastic band.

[0011] In the preferred solution, the loading plate is symmetrically provided with a limit slide groove and a limit frame, the limit frame is provided with a movable seat cooperating therewith, the movable seat is provided with an adjusting wheel cooperating with the clamping elastic band, the movable seat is provided with an adjusting screw cooperating with the limit slide groove, and the adjusting screw is provided with a fastening nut.

[0012] The present invention can achieve the following beneficial effects: (1) Due to the shaking effect, when the optical fiber bundle merges with the extruded hollow sleeve, the shaking weakens the adhesion between them due to friction, static electricity, and tension, promotes the separation contact state, and reduces mutual friction; (2) At the same time, it can reduce the friction force on the optical fiber caused by the inherent violent contraction movement of the sleeve in high-speed production or smaller types of hollow tubes, preventing the optical fiber from being subjected to excessive force loss; (3) Ensure that the optical fiber bundle is neatly and evenly distributed in the sleeve as much as possible, and make the important excess length quality index of the optical fiber sleeve stable within the limited tension range of the optical fiber, so as to better meet the production requirements of high-speed production of secondary sleeves or the fiber occupancy ratio in large hollow plastic sleeves, so as to achieve high-speed and stable production of secondary sleeve products. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 It is a schematic diagram of the auxiliary traction structure of the present invention.

[0015] Figure 3 It is a schematic diagram of the auxiliary traction structure of the present invention.

[0016] In the figure: a pay-off frame 1, a first optical fiber reel 2, a second optical fiber reel 3, a third optical fiber reel 4, a fourth optical fiber reel 5, a first transition wheel 6, a second transition wheel 7, a vibration shaft 8, a vibration wheel 9, a transmission structure 10, a vibration source 11, a third transition wheel 12, an extruder 13, a warm water tank 14, a traction wheel 15, a cold water tank 16, a take-up device 17, an auxiliary traction 18, a loading plate 19, an auxiliary wheel 20, a limit table 21, a matching groove 22, a clamping elastic band 23, a limit slide 24, a limit frame 25, a movable seat 26, an adjusting wheel 27, an adjusting screw 28, a fastening nut 29, and a mounting frame 30. DETAILED DESCRIPTION

[0017] Embodiment 1: like Figure 1-3 In the present invention, a fiber bundle vibration tube-entry device for secondary sheathing of optical cables comprises a pay-off frame 1 and an equipment frame, wherein the pay-off frame 1 is provided with a first optical fiber reel 2, a second optical fiber reel 3, a third optical fiber reel 4 and a fourth optical fiber reel 5, and the equipment frame is provided with a first transition wheel 6, a second transition wheel 7, a vibration structure, a third transition wheel 12, an extruder 13, a warm water tank 14, a traction wheel 15 and a cold water tank 16 in sequence from the input end to the output end, a take-up device 17 is provided at the discharge end of the cold water tank 16, and an auxiliary traction structure 18 is provided on the cold water tank 16. In a preferred solution, the first optical fiber disc 2 and the second optical fiber disc 3 correspond to the first transition wheel 6 .

[0018] In a preferred solution, the third optical fiber disc 4 and the fourth optical fiber disc 5 correspond to the second transition wheel 7 .

[0019] In a preferred embodiment, the vibration structure includes a vibration shaft 8 arranged on the equipment frame, and a vibration wheel 9 corresponding to the first transition wheel 6 and the second transition wheel 7 is provided on the vibration shaft 8. The vibration shaft 8 is connected to the vibration source 11 through a transmission structure 10.

[0020] In the preferred embodiment, the auxiliary traction structure 18 includes a loading plate 19, a mounting frame 30 connected to the cold water tank 16 is provided at the bottom of the loading plate 19, two sets of auxiliary wheels 20 are symmetrically provided on the loading plate 19, and the auxiliary wheels 20 on the same side are covered with elastic material clamping belts 23 that cooperate with them.

[0021] In a preferred solution, the auxiliary wheel 20 is provided with a limit platform 21 and a matching groove 22 that match the material clamping elastic band 23.

[0022] In the preferred embodiment, the loading plate 19 is symmetrically provided with a limit slot 24 and a limit frame 25, the limit frame 25 is provided with a movable seat 26 that cooperates with it, the movable seat 26 is provided with an adjusting wheel 27 that cooperates with the clamping elastic band 23, the movable seat 26 is provided with an adjusting screw 28 that cooperates with the limit slot 24, and the adjusting screw 28 is provided with a fastening nut 29.

[0023] Embodiment 2: like Figure 1-3 In the present invention, the method of use is: S1: The first optical fiber reel 2, the second optical fiber reel 3, the third optical fiber reel 4 and the fourth optical fiber reel 5 are installed on the pay-off frame 1 for storing the optical fibers to be processed. These optical fiber reels provide material input for subsequent processing; S2: The optical fibers released from each group of optical fiber discs are guided by the first transition wheel 6 and the second transition wheel 7 in groups, and smoothly enter the next processing step. The optical fibers of the first optical fiber disc 2 and the second optical fiber disc 3 correspond to the first transition wheel 6, and the optical fibers of the third optical fiber disc 4 and the fourth optical fiber disc 5 correspond to the second transition wheel 7; S3: The vibration structure includes a vibration shaft 8 and a vibration wheel 9 thereon, which cooperates with the first transition wheel 6 and the second transition wheel 7 so that the optical fiber undergoes a vibration process before entering the extruder 13. The vibration source 11 drives the vibration shaft 8 to rotate through the transmission structure 10 to produce the desired vibration effect. This process helps to reduce or eliminate the problems of entanglement and adhesion between optical fibers, and ensures that the optical fiber enters the tube smoothly; S4: The optical fiber bundle after the shaking treatment is then sent to the extruder 13, and the optical fiber bundle is wrapped with a plastic protective layer, that is, the so-called "secondary coating" is completed; S5: The newly extruded optical cable with plastic sheath needs to be pre-cooled in a warm water tank 14 and then pulled through a cold water tank 16 by a traction wheel 15 to accelerate cooling and fix the shape; S6: The optical cable is acted upon by the auxiliary traction structure 18 disposed above the cold water tank 16 to ensure that the optical cable can maintain appropriate tension after cooling, and is finally collected by the cable take-up device 17; S7: In order to adapt to optical cables of different diameters or types, the auxiliary traction structure 18 is also equipped with an adjustable limiting slide 24, a limiting frame 25, a movable seat 26, an adjusting screw 28 and a fastening nut 29, allowing the operator to adjust the position and pressure of the auxiliary wheel according to actual conditions.

[0024] The beneficial effects of the present invention are as follows: due to the shaking effect, when the optical fiber bundle merges with the extruded hollow sleeve, the adhesion between them due to friction, static electricity and tension is weakened under the action of this shaking, thereby promoting a separated contact state and reducing mutual friction; at the same time, the rubbing force of the sleeve on the optical fiber caused by the inherent violent contraction movement of the sleeve in high-speed production or smaller types of hollow tubes can be reduced, thereby preventing the optical fiber from being subjected to excessive force loss; the optical fiber bundle can be guaranteed to be uniform and evenly distributed in the sleeve as much as possible, and the important excess length quality index of the optical fiber sleeve can still be stabilized within the limited tension range of the optical fiber, and it can be more adaptable to the production requirements of high-speed production of secondary sleeves or the optical fiber occupancy ratio in large hollow plastic sleeves, so as to achieve high-speed and stable production of secondary sleeve products.

Claims

1. A fiber bundle vibration tube-entry device for secondary sheathing of optical cables, comprising a pay-off frame (1) and an equipment frame, characterized in that: The pay-off frame (1) is provided with a first optical fiber reel (2), a second optical fiber reel (3), a third optical fiber reel (4) and a fourth optical fiber reel (5); the equipment frame is provided with a first transition wheel (6), a second transition wheel (7), a vibration structure, a third transition wheel (12), an extruder (13), a warm water tank (14), a traction wheel (15) and a cold water tank (16) in sequence from the input end to the output end; a take-up device (17) is provided at the discharge end of the cold water tank (16); and an auxiliary traction structure (18) is provided on the cold water tank (16).

2. The optical cable secondary sheathing production fiber bundle vibration tube entry device according to claim 1 is characterized by: The first optical fiber disc (2) and the second optical fiber disc (3) correspond to the first transition wheel (6).

3. The optical cable secondary sheathing production fiber bundle vibration tube entry device according to claim 1 is characterized by: The third optical fiber disc (4) and the fourth optical fiber disc (5) correspond to the second transition wheel (7).

4. The optical cable secondary sheathing production fiber bundle vibration tube entry device according to claim 1, characterized in that: The vibration structure comprises a vibration shaft (8) arranged on an equipment frame, the vibration shaft (8) being provided with a vibration wheel (9) corresponding to the first transition wheel (6) and the second transition wheel (7), and the vibration shaft (8) being connected to a vibration source (11) via a transmission structure (10).

5. The optical cable secondary sheathing production fiber bundle vibration tube entry device according to claim 1, characterized in that: The auxiliary traction structure (18) comprises a loading plate (19), a mounting frame (30) connected to the cold water tank (16) is provided at the bottom of the loading plate (19), two sets of auxiliary wheels (20) are symmetrically provided on the loading plate (19), and the auxiliary wheels (20) on the same side are covered with elastic material clamping belts (23) that cooperate with them.

6. The optical cable secondary sheathing production fiber bundle vibration tube entry device according to claim 5, characterized in that: The auxiliary wheel (20) is provided with a limit platform (21) and a matching groove (22) that match the material clamping elastic band (23).

7. The optical cable secondary sheathing production fiber bundle vibration tube entry device according to claim 5, characterized in that: The loading plate (19) is symmetrically provided with a limit slide groove (24) and a limit frame (25); the limit frame (25) is provided with a movable seat (26) matched therewith; the movable seat (26) is provided with an adjusting wheel (27) matched with the clamping elastic band (23); the movable seat (26) is provided with an adjusting screw (28) matched with the limit slide groove (24); and the adjusting screw (28) is provided with a fastening nut (29).

8. The processing method of the optical cable secondary sheathing production fiber bundle shaking tube device according to any one of claims 1 to 7, characterized in that The steps include:. S1: A first optical fiber reel (2), a second optical fiber reel (3), a third optical fiber reel (4) and a fourth optical fiber reel (5) are installed on a pay-off frame (1) and are used to store optical fibers to be processed. These optical fiber reels provide material input for subsequent processing; S2: The optical fibers released from each group of optical fiber discs are guided by the first transition wheel (6) and the second transition wheel (7) in groups and smoothly enter the next processing step. The optical fibers of the first optical fiber disc (2) and the second optical fiber disc (3) correspond to the first transition wheel (6), while the optical fibers of the third optical fiber disc (4) and the fourth optical fiber disc (5) correspond to the second transition wheel (7); S3: The vibration structure comprises a vibration shaft (8) and a vibration wheel (9) thereon, which cooperates with the first transition wheel (6) and the second transition wheel (7) so that the optical fiber undergoes a vibration process before entering the extruder (13). The vibration source (11) drives the vibration shaft (8) to rotate through the transmission structure (10) to produce the desired vibration effect. This process helps to reduce or eliminate problems such as entanglement and adhesion between optical fibers, thereby ensuring that the optical fiber enters the tube smoothly. S4: The optical fiber bundle after the vibration treatment is then sent to the extruder (13), and the optical fiber bundle is wrapped with a plastic protective layer, that is, the so-called "secondary coating" is completed; S5: The newly extruded optical cable with a plastic sheath needs to be pre-cooled in a warm water tank (14) and then pulled through a cold water tank (16) by a traction wheel (15) to accelerate cooling and fix the shape; S6: The optical cable is acted upon by an auxiliary traction structure (18) disposed above the cold water tank (16) to ensure that the optical cable can maintain appropriate tension after cooling, and is finally collected by a cable take-up device (17); S7: In order to adapt to optical cables of different diameters or types, the auxiliary traction structure (18) is also equipped with an adjustable limit slide (24), a limit frame (25), a movable seat (26), an adjustment screw (28) and a tightening nut (29), allowing the operator to adjust the position and pressure of the auxiliary wheel according to actual conditions.

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