A fiber cutting device

Abstract

The utility model discloses a fiber shearing device, which relates to the technical field of optical fiber production. A driving mechanism drives an upper shearing and clamping mechanism and / or a lower shearing and clamping mechanism to make the upper shearing and clamping mechanism and the lower shearing and clamping mechanism approach or move away from each other. When the optical fiber needs to be cut, the upper clamping block and the lower clamping block approach each other, and at the same time, the upper blade and the lower blade synchronously approach each other. The upper blade and the lower blade cooperate to shear the optical fiber, and the upper clamping block and the lower clamping block cooperate to clamp the optical fiber. Within a predetermined time interval when the upper blade and the lower blade cut the optical fiber, the upper clamping block and the lower clamping block clamp the optical fiber close to one side of a pay-off frame to avoid the optical fiber from being scattered when the optical fiber is cut, and the whole process is realized automatically.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber production, and further relates to a fiber cutting device. Background Art

[0002] In the manufacturing process of optical cables, there are four steps from optical fiber to finished optical cable products, namely coloring, sheathing, cabling, and sheathing. On the sheathing production line, the raw optical fiber is released from the pay-off frame, sheathed after curing and coloring, and gathered and wound on the take-up frame to gather several loosely distributed optical fibers into a bundle. When certain conditions are met, the optical fiber needs to be cut.

[0003] The current method of cutting optical fibers is mainly manual cutting. Production personnel will manually cut the fiber according to the segment length, reduce the moving speed of the optical fiber, and cut it with scissors. After cutting, the optical fiber on one side of the pay-off frame loses its restraint, loosens and falls off the guide wheel, and the excessively long optical fiber falls to the ground. After cutting, the production needs to be rewound. If the production personnel do not want the optical fiber on one side of the pay-off frame to be loose, they need to grab the optical fiber on one side of the pay-off frame by hand at the moment of cutting and move it towards the take-up frame.

[0004] When using manual fiber cutting, scissors are needed to cut the fiber in sections, which tests the experience of the production personnel. The fiber needs to be caught at the moment of cutting, which increases the difficulty of operation for the production personnel. Once the fiber is caught, it will fall off and cannot be used anymore, resulting in waste of fiber raw materials. It also takes a long time to put it into production again. At this time, the extruder works normally, resulting in waste of sleeves.

[0005] For those skilled in the art, how to clamp the optical fiber bundle when the fiber is broken to prevent it from being scattered is a technical problem that needs to be solved at present. Utility Model Content

[0006] The utility model provides a fiber cutting device, which can automatically clamp the optical fiber during fiber cutting, thereby preventing the optical fiber from being scattered. The specific scheme is as follows:

[0007] A fiber shearing device comprises an upper shearing and clamping mechanism, a lower shearing and clamping mechanism and a driving mechanism, wherein the upper shearing and clamping mechanism comprises an upper clamping block and an upper blade which move synchronously, and the lower shearing and clamping mechanism comprises a lower clamping block and a lower blade which move synchronously;

[0008] The driving mechanism is used to drive the upper shearing and clamping mechanism and / or the lower shearing and clamping mechanism so that the upper shearing and clamping mechanism and the lower shearing and clamping mechanism are moved closer to or farther from each other;

[0009] The upper blade cooperates with the lower blade to shear the optical fiber, and the upper clamp block cooperates with the lower clamp block to clamp the optical fiber; within a predetermined time interval when the upper blade and the lower blade cut the optical fiber, the upper clamp block and the lower clamp block clamp the optical fiber close to one side of the pay-off frame.

[0010] Optionally, it further comprises a clamping mounting frame, and the upper clamping block and the upper blade are fixed to the clamping mounting frame through an upper shear clamp support block;

[0011] The fixed part of the driving mechanism is fixed to the clamping mounting frame; the lower clamping block and the lower blade are fixed to the movable part of the driving mechanism through a lower shear clamp supporting block.

[0012] Optionally, the upper clamp block and the upper blade are respectively detachably mounted on the upper shear clamp support block, and the lower clamp block and the lower blade are respectively detachably mounted on the lower shear clamp support block.

[0013] Optionally, the upper blade is arranged to be inclined so that when the lower blade approaches the upper blade, the distance between the lower blade and the upper blade along the moving direction of the optical fiber is reduced.

[0014] Optionally, the upper blade is mounted on the upper shear clamp support block via an upper blade fixing block, and a waist-shaped hole is provided on the upper blade fixing block for adjusting the position of the upper blade along the moving direction of the optical fiber.

[0015] Optionally, the upper blade is provided with an avoidance hole, and the optical fiber passes through the avoidance hole.

[0016] Optionally, a buffer mounting frame is further included, on which a guide rail is arranged, and the clamping mounting frame is slidably mounted on the guide rail, and the direction of the guide rail is parallel to the moving direction of the optical fiber;

[0017] The buffer mounting frame is provided with a buffer mechanism, and the buffer mechanism is used to drive the clamping mounting frame to move along the guide rail, so as to reduce the speed difference between the optical fiber and the clamping mounting frame during shearing.

[0018] Optionally, the buffer mounting frame is mounted on a frame, and the buffer mounting frame can adjust the vertical height.

[0019] Optionally, the driving mechanism and the buffer mechanism are both cylinders.

[0020] Optionally, it further comprises a fiber break detector and a controller, wherein the fiber break detector is used to detect whether the optical fiber is broken and send a signal to the controller;

[0021] When the controller receives a fiber-breaking signal or detects that the optical fiber winding reaches a preset value, the controller sends a fiber-breaking signal to cut off the optical fiber.

[0022] The utility model provides a fiber shearing device, wherein a driving mechanism drives an upper shearing clamp mechanism and / or a lower shearing clamp mechanism so that the upper shearing clamp mechanism and the lower shearing clamp mechanism are close to or away from each other, and when it is necessary to cut the optical fiber, the upper clamp block and the lower clamp block are close to each other, and at the same time, the upper blade and the lower blade are synchronously close to each other, the upper blade and the lower blade cooperate to shear the optical fiber, the upper clamp block and the lower clamp block cooperate to clamp the optical fiber, and within a predetermined time interval when the upper blade and the lower blade cut the optical fiber, the upper clamp block and the lower clamp block clamp the optical fiber close to one side of the pay-off frame to avoid the optical fiber from being scattered when the optical fiber is cut, and the whole process is realized automatically. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of a specific embodiment of the fiber shearing device provided by the utility model;

[0025] Figure 2 for Figure 1 The partial enlarged picture of the dotted box part;

[0026] Figure 3 It is a schematic diagram of the top view of the optical fiber movement process;

[0027] Figure 4 It is a schematic diagram of the front view of the upper blade and the lower blade cooperating with each other.

[0028] The figure includes:

[0029] Upper shearing and clamping mechanism 1, upper clamping block 11, upper blade 12, avoidance hole 121, upper shearing and clamping support block 13, upper knife fixing block 14, waist-shaped hole 141, lower shearing and clamping mechanism 2, lower clamping block 21, lower blade 22, lower shearing and clamping support block 23, driving mechanism 3, clamping mounting frame 4, buffer mounting frame 5, guide rail 51, buffer mechanism 52, frame 6. DETAILED DESCRIPTION

[0030] The core of the utility model is to provide a fiber cutting device which can automatically clamp the optical fiber during fiber cutting, thereby preventing the optical fiber from being scattered.

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the fiber shearing device of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Combination Figure 1As shown, the utility model provides a fiber shearing device, including an upper shearing and clamping mechanism 1, a lower shearing and clamping mechanism 2 and a driving mechanism 3. The upper shearing and clamping mechanism 1 includes an upper clamping block 11 and an upper blade 12 that move synchronously, and the upper clamping block 11 and the upper blade 12 keep moving synchronously, that is, the upper clamping block 11 and the upper blade 12 keep stationary or move synchronously, and the upper clamping block 11 and the upper blade 12 can be fixed as one. The lower shearing and clamping mechanism 2 includes a lower clamping block 21 and a lower blade 22 that move synchronously, and the lower clamping block 21 and the lower blade 22 keep moving synchronously, that is, the lower clamping block 21 and the lower blade 22 keep stationary or move synchronously, and the lower clamping block 21 and the lower blade 22 can be fixed as one. In the process of shearing and clamping the optical fiber, the upper shearing and clamping mechanism 1 and the lower shearing and clamping mechanism 2 can move relative to each other at the same time, or one of them can keep stationary and the other can move, as long as the upper shearing and clamping mechanism 1 and the lower shearing and clamping mechanism 2 have relative displacement.

[0033] The driving mechanism 3 is used to drive the upper shearing and clamping mechanism 1 and / or the lower shearing and clamping mechanism 2, so that the upper shearing and clamping mechanism 1 and the lower shearing and clamping mechanism 2 are moved closer to or farther away from each other; that is, the driving mechanism 3 can be set as one or two. If two driving mechanisms 3 are set, each driving mechanism 3 drives one of the upper shearing and clamping mechanism 1 and the lower shearing and clamping mechanism 2 respectively; if one driving mechanism 3 is set, the driving mechanism 3 can drive one of the upper shearing and clamping mechanism 1 and the lower shearing and clamping mechanism 2 to move, and can also synchronously drive the upper shearing and clamping mechanism 1 and the lower shearing and clamping mechanism 2 to move relative to each other. Regardless of the structure adopted, under the drive of the driving mechanism 3, the upper shearing and clamping mechanism 1 and the lower shearing and clamping mechanism 2 can be moved closer to or farther away from each other.

[0034] The upper blade 12 cooperates with the lower blade 22 to cut the optical fiber, and the upper clamping block 11 cooperates with the lower clamping block 21 to clamp the optical fiber; Figure 3 As shown, there is a misalignment between the upper blade 12 and the lower blade 22 in the moving direction of the optical fiber. When the upper blade 12 and the lower blade 22 are close to each other to shear the optical fiber, a shear force is applied to the optical fiber, and the optical fiber bundle can be cut off; the upper clamp block 11 and the lower clamp block 21 are positioned relative to each other, and the line connecting the upper clamp block 11 and the lower clamp block 21 is perpendicular to the moving direction of the optical fiber. When the upper clamp block 11 and the lower clamp block 21 are close to each other, a clamping force can be formed on the optical fiber.

[0035] Within the predetermined time interval when the upper blade 12 and the lower blade 22 cut the optical fiber, the upper clamp block 11 and the lower clamp block 21 clamp the optical fiber close to the side of the pay-off frame. The predetermined time interval can be 0, that is, the optical fiber is clamped while cutting it; it can also be a certain time range, for example, within the range of ±10ms when the upper blade 12 and the lower blade 22 cut off all the optical fibers.

[0036] Combination Figure 3As shown, the optical fiber moves from right to left, the right side A is the pay-off frame, and the left side B is the take-up frame. The optical fiber is put in from the pay-off frame and wound on the take-up frame. The convergence degree of the optical fiber on the take-up frame is higher than that of the pay-off frame. From the top view, the optical fiber bundle tapers from the pay-off frame to the take-up frame. The positions of the upper clamp block 11 and the lower clamp block 21 are closer to the pay-off frame relative to the positions of the upper blade 12 and the lower blade 22. When the optical fiber is cut by the upper blade 12 and the lower blade 22, the upper clamp block 11 and the lower clamp block 21 clamp the optical fiber released from the pay-off frame to prevent the optical fiber from being scattered. After the optical fiber is cut, the wire roll that has been wound with the optical fiber can be taken out from the take-up frame and a new empty wire roll can be put in. Then the optical fiber clamped by the upper clamp block 11 and the lower clamp block 21 passes between the upper blade 12 and the lower blade 22, and is wound on the wire roll of the take-up frame, and the winding process of the next process is carried out again. The utility model automatically clamps the optical fiber in the process of cutting the optical fiber, does not need to rely on manual labor, and avoids manual operation errors.

[0037] Based on the above scheme, combined with Figure 1 As shown, the fiber shearing device provided by the utility model further includes a clamping mounting frame 4, which is a supporting structure. The upper clamping block 11 and the upper blade 12 are fixed to the clamping mounting frame 4 through the upper shear clamp support block 13, and the clamping mounting frame 4 provides support for the upper shear clamp mechanism 1. The upper clamping block 11 and the upper blade 12 are respectively fixedly mounted on the upper shear clamp support block 13, and then fixed to the clamping mounting frame 4 through the upper shear clamp support block 13.

[0038] The fixed part of the driving mechanism 3 is fixed to the clamping mounting frame 4. For example, when the driving mechanism 3 adopts a cylinder, the fixed part is a cylinder barrel, which is fixed to the clamping mounting frame 4. The cylinder rod is the movable part, and the cylinder rod can be telescopically moved relative to the cylinder barrel. The lower clamp block 21 and the lower blade 22 are fixed to the movable part of the driving mechanism 3 through the lower shear clamp support block 23; the lower clamp block 21 and the lower blade 22 are installed on the lower shear clamp support block 23, and then fixed to the clamping mounting frame 4 through the lower shear clamp support block 23.

[0039] It should be noted that in the embodiment shown in the drawings of the utility model, the optical fiber moves from the pay-off frame to the take-up frame, roughly in the horizontal direction, and at this time, the upper shearing and clamping mechanism 1 and the lower shearing and clamping mechanism 2 are relatively displaced in the vertical direction to achieve shearing and clamping. In addition to this method, the optical fiber can also move in the vertical direction or tilt, and at this time, the relative movement direction of the upper shearing and clamping mechanism 1 and the lower shearing and clamping mechanism 2 is also changed accordingly, and remains perpendicular to the movement direction of the optical fiber.

[0040] In one embodiment, the upper clamp block 11 and the upper blade 12 are respectively detachably mounted on the upper shear clamp support block 13, and the lower clamp block 21 and the lower blade 22 are respectively detachably mounted on the lower shear clamp support block 23. The upper clamp block 11, the upper blade 12 and the lower clamp block 21, the lower blade 22 are arranged in a detachable manner and can be replaced individually when worn.

[0041] Since the optical fiber bundle has multiple optical fibers, in order to ensure stability when clamping the optical fiber, the upper clamp block 11 and the lower clamp block 21 are made of materials with a certain elasticity such as silicone or rubber. When the upper clamp block 11 and the lower clamp block 21 cooperate to clamp the optical fiber, a buffering effect is achieved to avoid hard impact on the upper clamp block 11 and the lower clamp block 21.

[0042] Combination Figure 4 As shown, in one embodiment, the upper blade 12 is arranged at an angle, so that when the lower blade 22 approaches the upper blade 12, the distance between the lower blade 22 and the upper blade 12 along the moving direction of the optical fiber decreases. Figure 4 When the optical fiber moves from right to left, the upper end of the upper blade 12 is closer to the incoming direction of the optical fiber than the lower end. The lower blade 22 can be set vertically or tilted, but when it is close to the cutting position, the distance between the lower blade 22 and the upper blade 12 along the moving direction of the optical fiber is reduced. When the fiber is not cut, a gap needs to be left between the upper blade 12 and the lower blade 22. The gap becomes smaller and smaller as the upper and lower blades 22 move until it is 0 when the cut fibers meet.

[0043] Combination Figure 2 As shown, in one embodiment, the upper blade 12 is installed on the upper shear clamp support block 13 through the upper blade fixing block 14, and a waist-shaped hole 141 is provided on the upper blade fixing block 14. The waist-shaped hole 141 is a vertical through passage, and the length direction of the waist-shaped hole 141 is along the moving direction of the optical fiber. The waist-shaped hole 141 can be passed through by bolts to achieve fixation, and is used to adjust the position of the upper blade 12 along the moving direction of the optical fiber, so that the upper blade 12 can adjust its position. The upper blade 12 can be fixed to the upper blade fixing block 14 by bolts. The upper blade 12 can be moved by using the waist-shaped hole 141, so as to adjust the distance between the lower blade 22 and the upper blade 12.

[0044] Combination Figure 2 As shown, the upper blade 12 is provided with an avoidance hole 121, and the optical fiber passes through the avoidance hole 121. The avoidance hole 121 is a closed annular space, and the optical fiber passes through the avoidance hole 121. The avoidance hole 121 forms a limit for the optical fiber, which can prevent the optical fiber from not being able to converge during shearing and causing incomplete cutting. The width of the lower blade 22 is greater than the width of the avoidance hole 121, which can ensure that the optical fiber bundle is completely cut.

[0045] Based on any of the above technical solutions and their combination, the utility model also includes a buffer mounting frame 5, combined with Figure 1 As shown, a guide rail 51 is provided on the buffer mounting frame 5 , and the clamping mounting frame 4 is slidably mounted on the guide rail 51 . The direction of the guide rail 51 is parallel to the moving direction of the optical fiber, and the guide rail 51 provides guidance for the clamping mounting frame 4 .

[0046] A buffer mechanism 52 is provided on the buffer mounting frame 5, and the buffer mechanism 52 is used to drive the clamping mounting frame 4 to move along the guide rail 51, so as to reduce the speed difference between the optical fiber and the clamping mounting frame 4 during shearing. The buffer mechanism 52 can adopt a driving structure such as a cylinder. In the process of shearing the optical fiber, the clamping mounting frame 4 is driven by the buffer mechanism 52 to move, so that the upper shearing clamp mechanism 1 and the lower shearing clamp mechanism 2 are synchronously translated, so as to reduce the speed difference between the upper shearing clamp mechanism 1 and the lower shearing clamp mechanism 2 and the optical fiber before shearing the optical fiber. The optical fiber does not need to be completely stopped, and shearing is achieved during the movement of the optical fiber. If the upper shearing clamp mechanism 1 and the lower shearing clamp mechanism 2 remain stationary, the speed difference with the optical fiber is large, resulting in an uneven cut.

[0047] When shearing, the drive mechanism 3 and the buffer mechanism 52 start to operate synchronously, the lower blade 22 approaches the upper blade 12, and the entire clamping mounting frame 4 moves. The drive mechanism 3 and the buffer mechanism 52 operate simultaneously to reduce the relative speed between the fiber cutting tool and the optical fiber, and also leave a certain buffer distance for clamping the optical fiber.

[0048] Combination Figure 1 As shown, in one embodiment, the buffer mounting frame 5 is installed on the frame 6, and the buffer mounting frame 5 can adjust the vertical height to achieve the adjustment of the fiber cutting height, and has a wider range of applications.

[0049] Specifically, the driving mechanism 3 and the buffer mechanism 52 provided in the present invention are both cylinders.

[0050] In one embodiment, the fiber cutting device provided by the utility model further includes a fiber break detector and a controller. The fiber break detector is used to detect whether the optical fiber is broken and send a signal to the controller. The controller receives the break signal and is capable of recording the winding amount of the optical fiber. When the controller receives the fiber break signal or detects that the optical fiber winding reaches a preset value, a fiber break signal is issued to cut the optical fiber. The winding amount of the optical fiber can be determined by detecting the rotation angle of the line roller or the rotation time of the line roller. The cutting operation can also be performed by a manually issued cutting instruction.

[0051] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fiber cutting device, characterized in that: The invention comprises an upper shearing and clamping mechanism (1), a lower shearing and clamping mechanism (2) and a driving mechanism (3), wherein the upper shearing and clamping mechanism (1) comprises an upper clamping block (11) and an upper blade (12) which move synchronously, and the lower shearing and clamping mechanism (2) comprises a lower clamping block (21) and a lower blade (22) which move synchronously; The driving mechanism (3) is used to drive the upper shearing and clamping mechanism (1) and / or the lower shearing and clamping mechanism (2) so as to make the upper shearing and clamping mechanism (1) and the lower shearing and clamping mechanism (2) move closer to or farther from each other; The upper blade (12) and the lower blade (22) cooperate to cut the optical fiber, and the upper clamping block (11) and the lower clamping block (21) cooperate to clamp the optical fiber; within a predetermined time interval when the upper blade (12) and the lower blade (22) cut the optical fiber, the upper clamping block (11) and the lower clamping block (21) clamp the optical fiber close to one side of the pay-off frame.

2. The fiber cutting device according to claim 1, characterized in that: It also comprises a clamping mounting frame (4), wherein the upper clamping block (11) and the upper blade (12) are fixed to the clamping mounting frame (4) via an upper shear clamp support block (13); The fixed part of the driving mechanism (3) is fixed to the clamping mounting frame (4); the lower clamping block (21) and the lower blade (22) are fixed to the movable part of the driving mechanism (3) via a lower shear clamp support block (23).

3. The fiber cutting device according to claim 2, characterized in that: The upper clamp block (11) and the upper blade (12) are respectively detachably mounted on the upper shear clamp support block (13), and the lower clamp block (21) and the lower blade (22) are respectively detachably mounted on the lower shear clamp support block (23).

4. The fiber cutting device according to claim 2, characterized in that: The upper blade (12) is arranged at an angle so that when the lower blade (22) approaches the upper blade (12), the distance between the lower blade (22) and the upper blade (12) along the moving direction of the optical fiber is reduced.

5. The fiber cutting device according to claim 4, characterized in that: The upper blade (12) is mounted on the upper shear clamp support block (13) via an upper blade fixing block (14); a waist-shaped hole (141) is provided on the upper blade fixing block (14) for adjusting the position of the upper blade (12) along the moving direction of the optical fiber.

6. The fiber cutting device according to claim 2, characterized in that: The upper blade (12) is provided with a avoidance hole (121), and the optical fiber passes through the avoidance hole (121).

7. The fiber shearing device according to any one of claims 2 to 6, characterized in that: It also comprises a buffer mounting frame (5) on which a guide rail (51) is arranged, the clamping mounting frame (4) is slidably mounted on the guide rail (51), and the direction of the guide rail (51) is parallel to the moving direction of the optical fiber; The buffer mounting frame (5) is provided with a buffer mechanism (52), and the buffer mechanism (52) is used to drive the clamping mounting frame (4) to move along the guide rail (51), thereby reducing the speed difference between the optical fiber and the clamping mounting frame (4) during shearing.

8. The fiber cutting device according to claim 7, characterized in that: The buffer mounting frame (5) is mounted on the frame (6), and the buffer mounting frame (5) can adjust the vertical height.

9. The fiber cutting device according to claim 7, characterized in that: The driving mechanism (3) and the buffer mechanism (52) are both cylinders.

10. The fiber cutting device according to claim 7, characterized in that: It also includes a fiber break detector and a controller, wherein the fiber break detector is used to detect whether the optical fiber is broken and send a signal to the controller; When the controller receives a fiber-breaking signal or detects that the optical fiber winding reaches a preset value, the controller sends a fiber-breaking signal to cut off the optical fiber.

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