Optical fiber plastic sheathing oil filling device

Abstract

The present invention belongs to the technical field of optical fiber manufacturing molds, and discloses an optical fiber sheathing and oil filling device. The optical fiber sheathing and oil filling device comprises: an oil filling mechanism, which is used to coat the optical fiber with ointment; a sheathing mechanism, which is used to sheath the optical fiber coated with the ointment; a first diameter detector, which is arranged between the oil filling mechanism and the sheathing mechanism, and is used to detect the diameter of the optical fiber coated with the ointment; a second diameter detector, which is arranged in the outlet direction of the sheathing mechanism, and is used to detect the diameter of the sleeve formed after the sheathing. The present invention can monitor the size of the sleeve, that is, the inner diameter and outer diameter of the sleeve in real time by using the first diameter detector to detect the diameter of the optical fiber coated with the ointment and using the second diameter detector to detect the diameter of the sleeve formed after the sheathing, and then control the amount of ointment squeezed out by the oil filling mechanism and the amount of plastic squeezed out by the sheathing mechanism through the control mechanism, so as to accurately control the size of the sleeve, thereby solving the problem that the size of the sleeve cannot be monitored in real time in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of optical fiber manufacturing molds, and in particular to an optical fiber sheathing and oil filling device. Background Art

[0002] In the sheathing process of producing optical cables, the fiber paste can enter the sleeve by filling or coating. Among them, the coating and oil filling method is: the fiber paste enters the oil chamber by pressure. The oil chamber includes an inlet mold and an outlet mold. The oil chamber is fixed on a bracket, and the bracket is connected to the head. The optical fiber passes through the oil chamber and is coated with fiber paste, and then enters the mold core in the head to complete the production. The coating process has very high requirements for the center line of the oil chamber, the head, and the main traction. If the center line is offset, the optical fiber will contact the inner wall of the mold core inside the mold core, and the fiber paste will be wiped off, resulting in failure to produce. For this process, it is necessary to achieve good control of the center line of the optical fiber from entering the oil chamber to leaving the oil chamber, then passing through the mold core in the head, and finally through the main traction. In addition to moving the extruder and roughly adjusting the center line, the center line can also be controlled by precisely designing the connection between the oil chamber bracket and the head, and slightly adjusting the position of the mold core by screwing the screws on the head. During production, the speed of the fiber paste pump and the speed of the extruder screw should be adjusted to control the outer diameter and wall thickness of the sleeve. Among them, the rotation speed of the fiber paste pump can affect the amount of fiber paste coated on the optical fiber, thereby affecting the inner diameter of the sleeve; the rotation speed of the extruder screw can affect the amount of extruded PBT, thereby affecting the outer diameter and wall thickness of the sleeve.

[0003] The prior art has the following disadvantages: (1) When the inlet mold and outlet mold of the oil chamber are to be replaced, the operation is not conducive to the high temperature of the mold and the short distance from the machine head; (2) The position of the oil chamber on the bracket needs to be moved forward and backward as necessary according to the situation, but the oil chamber of the prior art is fixed on the bracket and can only be moved in the groove of the bracket. When it needs to be moved, the screws need to be loosened, which is troublesome to operate; (3) When the oil chamber is at different positions of the bracket or the bracket is deformed, it is difficult to ensure that the center of the oil chamber is in line with the center of the mold core; (4) The wall thickness of the sleeve can only be roughly controlled and then debugged again according to the test results after production, which affects the efficiency of production and debugging and is not conducive to real-time monitoring of the sleeve size.

[0004] Therefore, there is an urgent need to provide a new optical fiber sheathing and oil-filling device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide an optical fiber sheathing and oil filling device, which solves the problem that the sheath size cannot be monitored in real time in the prior art.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] An optical fiber plastic sheathing and oil filling device, comprising:

[0008] An oil filling mechanism, which is used to apply ointment to the optical fiber;

[0009] A sheathing mechanism, which is used to sheath the optical fiber coated with ointment;

[0010] A first diameter detector, which is disposed between the oil filling mechanism and the plastic coating mechanism, and is used to detect the diameter of the optical fiber coated with the ointment;

[0011] The second diameter detector is arranged at the outlet direction of the sleeve molding mechanism and is used to detect the diameter of the sleeve formed after the sleeve molding.

[0012] Preferably, a conduit is provided between the oil filling mechanism and the plastic sleeve mechanism, and the first diameter detector is provided between the oil filling mechanism and the conduit.

[0013] Preferably, a laser emitter is provided at the outlet end of the oil filling mechanism, and a laser display area is provided at the inlet end of the plastic sleeve mechanism, and the laser emitter is opposite to the laser display area.

[0014] Preferably, the laser display area includes an alignment area, and when the laser emitted by the laser transmitter is located in the alignment area, the oil filling mechanism and the plastic sleeve mechanism are in a standard working position.

[0015] Preferably, the oil filling mechanism is provided with an adjusting member, and when the laser emitted by the laser transmitter is not located within the alignment area, the oil filling mechanism and the plastic sleeve mechanism are placed in a standard working position by adjusting the adjusting member.

[0016] Preferably, the adjusting member is a screw, and there are multiple screws.

[0017] Preferably, the oil filling mechanism is inserted into the first plate, and a plurality of screws for adjusting the outlet direction of the oil filling mechanism are provided around the first plate.

[0018] Preferably, the conduit is arranged in the second plate, the plastic sleeve mechanism is arranged in the third plate, the first plate and the second plate are both fixed on the slide plate, and the slide plate is slidably connected to the third plate.

[0019] Preferably, the slide plate is provided with a positioning member for fixing the slide plate to the third plate.

[0020] Preferably, a limiting member for limiting the distance between the slide plate and the plastic sleeve mechanism is provided on the third plate.

[0021] Beneficial effects of the present invention:

[0022] The present invention uses a first diameter detector to detect the diameter of the optical fiber coated with ointment and uses a second diameter detector to detect the diameter of the sleeve formed after sheathing, so as to monitor the size of the sleeve, that is, the inner diameter and outer diameter of the sleeve in real time. Then, the control mechanism controls the amount of ointment squeezed out by the oil filling mechanism and the amount of plastic squeezed out by the sheathing mechanism, thereby accurately controlling the size of the sleeve, thus solving the problem that the sleeve size cannot be monitored in real time in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the optical fiber plastic sheathing and oil filling device provided by the present invention;

[0024] Figure 2 yes Figure 1 Schematic diagram of direction A.

[0025] In the figure:

[0026] 1. Oil filling mechanism; 2. Plastic sleeve mechanism; 3. First diameter detector; 4. Second diameter detector; 5. Conduit; 6. Slide plate;

[0027] 11. Adjusting member; 12. First plate; 21. Third plate; 22. Limiting member; 23. Baffle; 51. Second plate; 61. Positioning member; 62. Slide rail. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0029] like Figure 1As shown, it is a schematic diagram of the structure of an optical fiber sheathing oil filling device provided by the present invention. The optical fiber sheathing oil filling device includes an oil filling mechanism 1, a sheathing mechanism 2, a first diameter detector 3, a second diameter detector 4 and a conduit 5. Specifically, the oil filling mechanism 1 is used to coat the optical fiber with paste, the sheathing mechanism 2 is used to sheath the optical fiber coated with the paste, the first diameter detector 3 is arranged between the oil filling mechanism 1 and the sheathing mechanism 2, and is used to detect the diameter of the optical fiber coated with the paste, and the second diameter detector 4 is arranged in the outlet direction of the sheathing mechanism 2, and is used to detect the diameter of the casing formed after sheathing. The oil filling mechanism 1 includes a fiber paste pump for supplying the paste, and the sheathing mechanism 2 includes an extruder for supplying plastic (preferably PBT), and the first diameter detector 3, the second diameter detector 4, the fiber paste pump and the extruder are all connected to a controller. During production, the inner diameter and wall thickness of the casing can be controlled by adjusting the rotation speed of the fiber paste pump and the rotation speed of the screw of the extruder. Among them, the rotation speed of the fiber paste pump can affect the amount of fiber paste (i.e., paste) coated on the optical fiber, thereby affecting the inner diameter of the sleeve; the rotation speed of the screw of the extruder can affect the amount of extruded PBT, thereby affecting the wall thickness of the sleeve. Therefore, the present invention uses the first diameter detector 3 to monitor the size of the inner diameter of the sleeve in real time, so that it transmits the measured signal to the controller, and the controller controls the amount of paste discharged by the fiber paste pump, thereby controlling the inner diameter of the sleeve; similarly, the second diameter detector 4 is used to monitor the size of the outer diameter of the sleeve in real time (i.e., wall thickness + inner diameter), so that it transmits the measured signal to the controller, and the controller controls the amount of plastic discharged by the extruder, thereby controlling the outer diameter of the sleeve, so that the size of the sleeve can be accurately controlled, which solves the problem that the size of the sleeve cannot be monitored in real time in the prior art.

[0030] Specifically, a conduit 5 is provided between the oil filling mechanism 1 and the plastic sheathing mechanism 2, and a first diameter detector 3 is provided between the oil filling mechanism 1 and the conduit 5. By providing the conduit 5 at the entrance direction of the plastic sheathing mechanism 2, the optical fiber coated with the ointment can enter the plastic sheathing mechanism 2 in a more aligned manner, thereby avoiding the situation where the optical fiber sags.

[0031] Specifically, a laser emitter (not shown in the figure) is provided at the outlet end of the oil filling mechanism 1, and a laser display area is provided at the inlet end of the plastic sleeve mechanism 2, and the laser emitter is opposite to the laser display area. Further, the laser display area includes an alignment area, and when the laser emitted by the laser emitter is located in the alignment area, the oil filling mechanism 1 and the plastic sleeve mechanism 2 are in a standard working position, that is, as long as the laser emitted by the laser emitter is observed to be located in the alignment area, it can be judged that the center line of the oil filling mechanism 1 (i.e., the center line of the oil chamber) and the center line of the plastic sleeve mechanism 2 (i.e., the center line of the mold core) are on the same straight line.

[0032] In addition, to determine whether the oil filling mechanism 1 is level, a level meter may be provided on the oil filling mechanism 1, and by determining the level of the level meter, it is determined whether the oil filling mechanism 1 deviates from the center line.

[0033] Specifically, Figure 2 As shown, the oil filling mechanism 1 is provided with an adjusting member 11. When the laser emitted by the laser emitter is not located in the alignment area, the adjusting member 11 is adjusted to make the oil filling mechanism 1 and the plastic sleeve mechanism 2 in the standard working position. When it is observed that the laser emitted by the laser emitter is not located in the alignment area, the adjusting member 11 is adjusted to make the center line of the oil filling mechanism 1 and the center line of the plastic sleeve mechanism 2 in the same straight line.

[0034] Specifically, the adjusting member 11 is a screw, and the oil filling mechanism 1 is fixed to the first plate 2 by a plurality of screws. The first plate 2 is provided with a plurality of waist-shaped holes opposite to the screws. When it is observed that the laser emitted by the laser transmitter is not located in the alignment area, the position of the screw in the waist-shaped hole is adjusted so that the center line of the oil filling mechanism 1 and the center line of the plastic sleeve mechanism 2 are in the same straight line. In this embodiment, there are 8 screws, which are evenly distributed around the oil filling mechanism 1.

[0035] Specifically, the conduit 5 is arranged in the second plate 51, the plastic sleeve mechanism 2 is arranged in the third plate 21, the first plate 12 and the second plate 51 are fixedly arranged on the slide plate 6, and the third plate 21 is an L-shaped plate, wherein the vertical section is provided with the plastic sleeve mechanism 2, and the horizontal section is slidably connected with the slide plate 6. Specifically, a slide rail 62 is arranged on the horizontal section of the third plate 21, so that the slide plate 6 and the third plate 21 are slidably connected, so that the horizontal distance between the oil filling mechanism 1 and the plastic sleeve mechanism 2 can be adjusted, so that the cleaning and replacement of the mold in the oil filling mechanism 1 can be facilitated.

[0036] Specifically, the slide plate 6 is provided with a positioning member 61 for fixing the slide plate 6 and the third plate 21 . When the slide plate 6 slides to a suitable position, the positioning member 61 is tightened to fix the slide plate 6 on the horizontal section of the third plate 21 .

[0037] Specifically, a limit piece 22 for limiting the distance between the slide plate 6 and the sleeve molding mechanism 2 is provided on the horizontal section of the third plate 21, a baffle plate 23 is provided at the end of the horizontal section of the third plate 21, and a slide rail 62 is provided between the baffle plate 23 and the vertical section. By utilizing the limit piece 22, the slide plate 6 and the vertical section can be kept outside a suitable range, thereby avoiding the influence that the mold temperature of the oil filling mechanism 1 is too high and the distance from the sleeve molding mechanism 2 is too short, which is not conducive to operation.

[0038] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technical users in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An optical fiber sheathing and oil filling device, characterized in that: include: An oil filling mechanism (1) for coating the optical fiber with ointment; A sheathing mechanism (2), used for sheathing the optical fiber coated with grease; A first diameter detector (3), which is arranged between the oil filling mechanism (1) and the coating mechanism (2) and is used to detect the diameter of the optical fiber coated with the ointment; A second diameter detector (4), which is arranged at the outlet direction of the sleeve molding mechanism (2) and is used to detect the diameter of the sleeve formed after the sleeve molding; A conduit (5) is provided between the oil filling mechanism (1) and the plastic sleeve mechanism (2), and the first diameter detector (3) is provided between the oil filling mechanism (1) and the conduit (5); The outlet end of the oil filling mechanism (1) is provided with a laser emitter, the inlet end of the plastic sleeve mechanism (2) is provided with a laser display area, and the laser emitter is opposite to the laser display area; The laser display area includes an alignment area, and when the laser emitted by the laser transmitter is located within the alignment area, the oil filling mechanism (1) and the plastic sleeve mechanism (2) are in a standard working position; The oil filling mechanism (1) is provided with an adjusting member (11), and when the laser light emitted by the laser transmitter is not located within the alignment area, the oil filling mechanism (1) and the plastic sleeve mechanism (2) are placed in a standard working position by adjusting the adjusting member (11); The adjusting member (11) is a screw, and there are multiple screws; The oil filling mechanism (1) is inserted into the first plate (12), and a plurality of screws for adjusting the outlet direction of the oil filling mechanism (1) are provided on the periphery of the first plate (12); The conduit (5) is arranged in the second plate (51), the plastic sleeve mechanism (2) is arranged in the third plate (21), the first plate (12) and the second plate (51) are both fixed on a slide plate (6), and the slide plate (6) is slidably connected to the third plate (21); The slide plate (6) is provided with a positioning member (61) for fixing the slide plate (6) and the third plate (21); The third plate (21) is provided with a limiting member (22) for limiting the distance between the slide plate (6) and the plastic sleeve mechanism (2).

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