Tight tube optical fiber preheating device

Abstract

The utility model relates to the field of optical fiber production and processing, and discloses a tight tube optical fiber preheating device, which comprises a box body and a top cover, the top cover is movably arranged at the top of the box body, a preheating assembly is arranged in the box body, a stretching assembly is arranged at the front part of the box body, the preheating assembly comprises a heat insulation box, a heat insulation cover and two groups of heating rods, the heat insulation box is fixedly installed in the box body, the heat insulation cover is installed in the top cover, the two sets of heating rods are installed in the heat insulation box, fixing plates are fixedly installed on the sides, close to each other, of the front portion and the rear portion of the box body, and two first guide wheels are movably installed on one side of the fixing plate located at the front end. Loss of internal heat is reduced, a heat insulation effect is achieved, the optical fiber can enter the box body back and forth for multiple times of heating, and arrangement of multiple preheating devices is reduced; meanwhile, the bending degree of the optical fiber during reciprocating can be reduced, better straightening can be achieved, and the tightness degree of the optical fiber during preheating conveying can be conveniently adjusted.

Description

Technical Field

[0001] The utility model relates to the field of optical fiber production and processing, in particular to a tight-buffered optical fiber preheating device. Background Art

[0002] The configuration of a typical tight-buffered optical fiber production line mainly includes a fiber pay-off rack, a fiber preheating and drying device, an extruder, a hot water device, a cold water device, a blow dryer, a diameter gauge, a traction device, a take-up device, etc. arranged in sequence. The extruder is used for the processing of the tight-buffered layer. The thermoplastic polymer has a high temperature during extrusion. If it comes into contact with an optical fiber that has not been preheated, it will cool prematurely and cause the polymer to be fixed on the surface of the optical fiber, shrinking unevenly, thereby causing excessive stress on the optical fiber and increasing attenuation. Therefore, the optical fiber needs to be preheated before passing through the extruder head.

[0003] A Chinese patent provides an optical fiber preheating and drying device, with publication number CN215113737U, which includes a drying box installed on the floor, which extends along the length of the optical fiber. An electric heating wire is installed in the drying box, and heating holes are opened on two opposite sides of the drying box. A drying device is fixedly connected to the drying box, and the drying device includes an air drying component and an air pump. An air pipe is fixedly connected to the air pump, and the air pipe is connected to the air drying component, and the optical fiber passes through the air drying component.

[0004] The above-mentioned preheating device has the effect of accelerating the evaporation of moisture attached to the surface of the optical fiber. However, in order to ensure a good preheating and drying effect, more than three preheating devices are usually arranged for preheating. After the workshop is upgraded and renovated, due to space limitations, multiple preheating devices cannot be arranged, which is inconvenient for multiple preheating of the optical fiber. The optical fiber that has been transported multiple times during preheating is prone to being too loose or too tight, and it is not convenient to adjust the stretching tightness. Utility Model Content

[0005] The purpose of the utility model is to provide a tight-buffered optical fiber preheating device to solve the technical problems in the background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A tight-sleeved optical fiber preheating device comprises a box body and a top cover, wherein the top cover is movably mounted on the top of the box body, a preheating assembly is mounted inside the box body, a stretching assembly is mounted on the front of the box body, the preheating assembly comprises an insulating box, an insulating cover and two groups of heating rods, the insulating box is fixedly mounted inside the box body, the insulating cover is mounted inside the top cover, and two groups of heating rods are mounted inside the insulating box, a fixing plate is fixedly mounted on one side of the front and rear parts of the box body, two first guide wheels are movably mounted on one side of the fixing plate at the front end, a second guide wheel is movably mounted on one side of the fixing plate at the rear end, and a straightener is mounted on the rear side of the box body.

[0008] Preferably, the top cover and the box body are connected by a hinge, and the heat-insulating cover is located on the top of the heat-insulating box and fits together.

[0009] Preferably, the front and rear ends of the box body and the thermal insulation box are both provided with through grooves, and the interior of the thermal insulation box and the through grooves are used for inserting optical fibers.

[0010] Preferably, the rotation directions of the two first guide wheels are opposite, and the rotation direction of the second guide wheel is the same as the rotation direction of the first guide wheel located at the upper end.

[0011] Preferably, the stretching assembly includes an adjusting seat, which is fixedly mounted on the front part of the fixed plate at the front end, a screw is movably mounted inside the adjusting seat, guide rails are mounted on the upper and lower ends of the adjusting seat, a turntable is fixedly mounted on the front end of the screw, an axis block is connected to the outside of the screw, and a stretching wheel is movably mounted on one side of the axis block.

[0012] Preferably, the outer ring diameter of the stretching wheel is larger than the outer ring diameter of the first guide wheel, and the stretching wheel is located on one side of the shaft block and is movably rotatable.

[0013] Preferably, the shaft block is located inside the adjustment seat and is slidably arranged, and the shaft block is sleeved on the outside of the screw and is threadedly connected.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The tight-buffered optical fiber preheating device is provided with a preheating assembly. The heating rod is located in the heat-insulating box to heat the optical fiber. The heat-insulating cover seals the heat-insulating box, which can reduce heat loss, play a heat-insulating role, and prevent burns. The two first guide wheels and the second guide wheel can make the optical fiber return to the box for multiple heating, reducing the installation of multiple preheating devices.

[0016] 2. The tight-fitting optical fiber preheating device is provided with a stretching assembly. The optical fiber after the round trip is hung on the stretching wheel. The optical fiber is transported into the box again through the stretching wheel, which reduces the bending of the optical fiber during the round trip and enables the optical fiber to be better straightened after passing through the straightener. The shaft block is driven to slide by the screw, and the stretching wheel follows the sliding, which facilitates the adjustment of the distance between the stretching wheel and the first guide wheel, and facilitates the adjustment of the tightness of the optical fiber during preheating and transportation to prevent it from being too loose or too tight. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a tight-buffered optical fiber preheating device in an embodiment of the present utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of the preheating component in an embodiment of the present utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of the stretching component in an embodiment of the present utility model.

[0020] Figure 4 It is an overall internal side view of an embodiment of the present invention.

[0021] In the figure: 1. Box body; 2. Top cover; 3. Preheating assembly; 4. Stretching assembly; 5. Thermal insulation box; 6. Thermal insulation cover; 7. Heating rod; 8. Fixed plate; 9. First guide wheel; 10. Second guide wheel; 11. Straightener; 12. Adjustment seat; 13. Screw; 14. Guide rail; 15. Turntable; 16. Shaft block; 17. Stretching wheel. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0023] Combine Figure 1-Figure 4 A tight-buffered optical fiber preheating device comprises a box body 1 and a top cover 2, the top cover 2 is movably mounted on the top of the box body 1, a preheating component 3 is mounted inside the box body 1, and a stretching component 4 is mounted on the front of the box body 1.

[0024] See Figure 2 , it is further obtained that the preheating assembly 3 includes a heat insulation box 5, a heat insulation cover 6 and two groups of heating rods 7. The heat insulation box 5 is fixedly installed inside the box body 1, the heat insulation cover 6 is installed inside the top cover 2, and the two groups of heating rods 7 are installed inside the heat insulation box 5. A fixing plate 8 is fixedly installed on one side of the front and rear parts of the box body 1. Two first guide wheels 9 are movably installed on one side of the fixing plate 8 at the front end, and a second guide wheel 10 is movably installed on one side of the fixing plate 8 at the rear end. A straightener 11 is installed at the rear of the box body 1.

[0025] The top cover 2 and the box body 1 are connected by a hinge, and the heat-insulating cover 6 is located on the top of the heat-insulating box 5 and fits with each other.

[0026] Through slots are provided at the front and rear ends of the box body 1 and the heat-insulating box 5 , and the interior of the heat-insulating box 5 and the through slots are used for inserting optical fibers.

[0027] The two first guide wheels 9 rotate in opposite directions, and the second guide wheel 10 rotates in the same direction as the first guide wheel 9 located at the upper end.

[0028] Specifically, the heat generated by the internal heating rod 7 is isolated by the heat-insulating box 5, the top cover 2 seals the top of the box body 1, and the heat-insulating box 5 is sealed by the heat-insulating cover 6 to play a heat-insulating role to prevent burns. The optical fiber passes through the first guide wheel 9 at the upper end and passes through the second guide wheel 10 to go back and forth between the two first guide wheels 9, and the optical fiber is transported to the box body 1 again, which can enable the optical fiber to be preheated three times in the box body 1, reducing the placement of multiple preheating devices. Example

[0029] See Figure 3 , and on the basis of Example 1, it is further obtained that the stretching component 4 includes an adjusting seat 12, the adjusting seat 12 is fixedly installed in front of the fixed plate 8 at the front end, a screw 13 is movably installed inside the adjusting seat 12, and guide rails 14 are installed on the upper and lower ends of the interior of the adjusting seat 12, a turntable 15 is fixedly installed at the front end of the screw 13, and a shaft block 16 is installed on the outside of the screw 13, and a stretching wheel 17 is movably installed on one side of the shaft block 16.

[0030] The outer ring diameter of the stretching wheel 17 is larger than the outer ring diameter of the first guide wheel 9 . The stretching wheel 17 is located on one side of the shaft block 16 and is movably rotatable.

[0031] The shaft block 16 is located inside the adjustment seat 12 and is slidably arranged. The shaft block 16 is sleeved on the outside of the screw rod 13 and is threadedly connected.

[0032] Specifically, when the optical fiber travels back and forth to the first guide wheel 9, the optical fiber is stretched by the stretching wheel 17 to reduce the curvature of the optical fiber so that the optical fiber can be better straightened after passing through the straightener 11. The shaft block 16 and the stretching wheel 17 are driven to slide by the screw 13 to facilitate adjustment of the tightness of the stretching during optical fiber transportation.

[0033] During actual operation, the optical fiber is inserted into the box 1, and the heating rod 7 heats the optical fiber. The heat insulation box 5 and the heat insulation cover 6 reduce heat loss and have a heat insulation effect to prevent burns.

[0034] During repeated heating, the optical fiber is conveyed into the box body 1 through the first guide wheel 9 at the upper end, and then passes through the second guide wheel 10 to go back and forth between the two first guide wheels 9, and then is inserted into the box body 1 again and conveyed out through the straightener 11. This allows the optical fiber to enter the box body 1 for heating multiple times, reducing the need for multiple preheating devices.

[0035] Since the optical fiber has a large curvature when it travels back and forth, when making adjustments, the optical fiber that travels back and forth between the two first guide wheels 9 is hung on the stretching wheel 17 and re-conveyed to the box body 1 to achieve three preheatings. The first guide wheel 9 is used to reduce the curvature of the optical fiber when it travels back and forth, so that the optical fiber can be better straightened after passing through the straightener 11. When the optical fiber is loose or tight during the preheating process, the screw 13 drives the shaft block 16 to slide by rotating the turntable 15, thereby changing the distance between the stretching wheel 17 and the first guide wheel 9, so as to prevent the optical fiber from being too loose or too tight during preheating.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tight-buffered optical fiber preheating device, comprising a box body (1) and a top cover (2), wherein the top cover (2) is movably mounted on the top of the box body (1), and is characterized in that: A preheating assembly (3) is installed inside the box (1), and a stretching assembly (4) is installed at the front of the box (1); The preheating assembly (3) comprises a heat-insulating box (5), a heat-insulating cover (6) and two groups of heating rods (7); the heat-insulating box (5) is fixedly mounted inside the box body (1); the heat-insulating cover (6) is mounted inside the top cover (2); the two groups of heating rods (7) are mounted inside the heat-insulating box (5); a fixing plate (8) is fixedly mounted on one side of the front and rear parts of the box body (1); two first guide wheels (9) are movably mounted on one side of the fixing plate (8) at the front end; a second guide wheel (10) is movably mounted on one side of the fixing plate (8) at the rear end; and a straightener (11) is mounted on the rear part of the box body (1).

2. The tight-buffered optical fiber preheating device according to claim 1, characterized in that: The top cover (2) and the box body (1) are connected via a hinge, and the heat-insulating cover (6) is located on the top of the heat-insulating box (5) and fits in with each other.

3. The tight-buffered optical fiber preheating device according to claim 1, characterized in that: Through slots are provided at the front and rear ends of the box body (1) and the heat-insulating box (5); the interior of the heat-insulating box (5) and the through slots are used for inserting optical fibers.

4. The tight-buffered optical fiber preheating device according to claim 1, characterized in that: The two first guide wheels (9) rotate in opposite directions, and the second guide wheel (10) rotates in the same direction as the first guide wheel (9) located at the upper end.

5. The tight-buffered optical fiber preheating device according to claim 1, characterized in that: The stretching assembly (4) includes an adjustment seat (12), the adjustment seat (12) is fixedly mounted on the front of a fixed plate (8) at the front end, a screw rod (13) is movably mounted inside the adjustment seat (12), guide rails (14) are mounted on the upper and lower ends of the adjustment seat (12), a turntable (15) is fixedly mounted on the front end of the screw rod (13), a shaft block (16) is connected to the outside of the screw rod (13), and a stretching wheel (17) is movably mounted on one side of the shaft block (16).

6. The tight-buffered optical fiber preheating device according to claim 5, characterized in that: The outer ring diameter of the stretching wheel (17) is larger than the outer ring diameter of the first guide wheel (9), and the stretching wheel (17) is located on one side of the shaft block (16) and is movably rotatable.

7. The tight-buffered optical fiber preheating device according to claim 5, characterized in that: The shaft block (16) is located inside the adjustment seat (12) and is arranged to slide. The shaft block (16) is sleeved on the outside of the screw rod (13) and is arranged to be threadedly connected.

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