CN115185039A

CN115185039A - Ultrasonic wave optic fibre cutting knife

Info

Publication number: CN115185039A
Application number: CN202211022785.3A
Authority: CN
Inventors: 严公厂
Original assignee: Anhui Guangchi Communication Equipment Co ltd
Current assignee: Anhui Guangchi Communication Equipment Co ltd
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2022-10-14

Abstract

The invention discloses an ultrasonic optical fiber cutter, which comprises a cutting device body, wherein the cutting device body comprises a first optical fiber clamping mechanism, a second optical fiber clamping mechanism, a cutting mechanism and a pushing mechanism; the cutting mechanism is installed on the top surface of the cutting device body, the cutting mechanism comprises an ultrasonic generator and a diamond blade, the first optical fiber clamping mechanism is arranged on the left side of the rear of the cutting mechanism and fixedly connected with the cutting device body, and is used for clamping and fixing the optical fiber to be cut, the second optical fiber clamping mechanism is arranged on the right side of the rear of the cutting mechanism and connected with the propelling mechanism, and is used for clamping and fixing the end part of the optical fiber to be cut, the second optical fiber clamping mechanism is detachably installed on the propelling mechanism, and the propelling mechanism is used for driving the second optical fiber clamping mechanism to move in the opposite direction or in the opposite direction along the length direction of the optical fiber to be cut. The invention not only is convenient for clamping and fixing the optical fiber to be cut, but also has high stability and is convenient for cutting.

Description

Ultrasonic wave optic fibre cutting knife

Technical Field

The invention relates to the technical field of optical fiber cutters, in particular to an ultrasonic optical fiber cutter.

Background

With the development and application of fiber optic gyroscopes and the advent of 6G networks, especially the development of small-size fiber optic gyroscopes, and the requirement of the future 6G network construction for the diameter of the optical fiber to be as fine as possible (reducing the space size and weight), superfine optical fibers (with the diameter of 35um-60 um) have been developed at present, and the processing of superfine optical fibers, especially the cutting of superfine optical fibers, has been a problem and bottleneck troubling engineers, and there has been no good cutting processing tool and equipment. In addition, some high-end light passive devices require the size to be more and more little at present, need optic fibre cutting length to be more and more little, and cutting angle requirements for quality are more and more high (cutting end face angle is the better the less), the utility model discloses ultrasonic wave optic fibre cutting knife can cut optic fibre length (cutting end face to coat terminal surface length) 2mm at the shortest, can cut the quartz fiber of covering diameter 40um-250um, and application scope is wide, and cutting optic fibre terminal surface angle is little (generally below 0.3 degree), and the success rate is than higher to ensure the optical fiber fusion splice loss, improved light passive devices's yields.

The tradition is all mechanical pressure cutting formula fiber cutter in the existing market, push down the both ends of peeling off back optic fibre part through four upper and lower rubber pressure pads, then the centre is through circular metal blade to optic fibre cutting operation, the structure has not guaranteed the cutting angle to the thin footpath optic fibre of optic fibre cladding diameter 50um-80um like this, the success rate is also lower, can't cut at all to the superfine optic fibre of diameter 35um-50um, and also there is certain restriction to cutting length (cutting terminal surface generally can not be less than 6mm to the coating terminal surface, because this kind of traditional mechanical structure cutting knife, can not have the protective layer on the pressure pad).

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides an ultrasonic optical fiber cutter, which adopts the following technical scheme:

an ultrasonic optical fiber cutter comprises a cutting device body, a first optical fiber clamping mechanism, a second optical fiber clamping mechanism, a cutting mechanism and a pushing mechanism;

cutting mechanism installs on the top surface of cutting device body, just cutting mechanism includes supersonic generator and diamond blade, first optic fibre fixture set up in cutting mechanism's rear left side and with cutting device body fixed connection for carry out the centre gripping to waiting to cut optic fibre and fix, second optic fibre fixture set up on cutting mechanism's rear right side and be connected with advancing mechanism, be used for carrying out the centre gripping to the tip of waiting to cut optic fibre and fix, second optic fibre fixture demountable installation is on advancing mechanism, advancing mechanism is used for driving second optic fibre fixture along the length direction of waiting to cut optic fibre in opposite directions or back-to-back removal.

Preferably, the diamond blade is arranged at the output end of the ultrasonic generator, the ultrasonic generator is connected with the circuit control board, and the circuit control board is used for driving the ultrasonic generator to drive the diamond blade to vibrate up and down so as to cut the optical fiber to be cut.

Preferably, the first optical fiber clamping mechanism comprises a first placing platform and a connecting rod, the first placing platform is fixedly connected with the top surface of the cutting device body, a first downward pressing cover plate is arranged above the first placing platform, a linkage mechanism is arranged between the first downward pressing cover plate and the first placing platform and is connected with the first placing platform through the linkage mechanism, the linkage mechanism is used for applying downward pressure on the first downward pressing cover plate when the first downward pressing cover plate and the first placing platform are in a pressing state, the linkage mechanism comprises a pressing rod, the pressing rod is movably hinged with the first placing platform, the middle of the pressing rod is connected with the first downward pressing cover plate through the connecting rod, one end of the connecting rod is movably hinged with the pressing rod, and the other end of the connecting rod is connected with the first downward pressing cover plate;

install anchor clamps on the first place the platform, anchor clamps include anchor clamps bottom plate and anchor clamps apron, the anchor clamps bottom plate cooperatees the centre gripping with the anchor clamps apron and waits to cut optic fibre, be provided with the elastic pressing block on the first apron of pushing down, work as when pressing the depression bar and pressing down, first apron and the interlock of first place the platform of pushing down, the elastic pressing block tightly pushes down anchor clamps.

Preferably, when the first lower cover plate and the first placement platform are in a press fit state, the connecting rod is parallel to the pressing rod, and an included angle between the pressing rod and the first placement platform is smaller than ninety degrees.

Preferably, the second optical fiber clamping mechanism comprises a second placing platform and a second lower cover plate, the second placing platform is connected with the propelling mechanism, the second lower cover plate is movably hinged with one end of the second placing platform, a connecting mechanism is arranged between the second lower cover plate and the second placing platform, and the connecting mechanism is used for applying downward pressure to the second lower cover plate when the second lower cover plate and the second placing platform are in a pressing state;

the connecting mechanism comprises a lower pressing rod and an elastic connecting rod, the lower pressing rod is movably hinged with the second placing platform, the middle of the lower pressing rod is connected with the second lower pressing cover plate through the elastic connecting rod, two ends of the elastic connecting rod are respectively movably hinged with the lower pressing rod and the second lower pressing cover plate, when the second lower pressing cover plate and the second placing platform are in a pressing state, the elastic connecting rod is parallel to the lower pressing rod, and an included angle between the lower pressing rod and the second placing platform is smaller than ninety degrees;

the optical fiber positioning device comprises a second placing platform, an optical fiber positioning seat, a pressing block and a pressing rod, wherein the second placing platform is fixedly provided with the optical fiber positioning seat, the optical fiber positioning seat is provided with an optical fiber positioning groove, the head of an optical fiber to be cut is positioned in the optical fiber positioning groove, the second pressing cover plate is provided with the pressing block matched with the optical fiber positioning groove and used for fixing the head of the optical fiber to be cut, the pressing rod is pressed down, the second pressing cover plate is meshed with the second placing platform, and the pressing block tightly presses the optical fiber to be cut in the optical fiber positioning groove.

Preferably, the pushing mechanism comprises a sliding block and a cam, the sliding block is arranged inside the cutting device body in a sliding mode, the second placing platform is detachably mounted on the top surface of the sliding block, the left side surface of the sliding block is fixedly connected with a thrust spring, the right side surface of the sliding block is movably connected with the cam, the action surface of the cam is always in contact with the right side surface of the sliding block, the cam pushes the sliding block to move leftwards and compresses the spring, the pushing mechanism further comprises a pushing knob, and the cam is movably connected with the cutting device body through the pushing knob;

the pushing mechanism further comprises a thrust spring, one end of the thrust spring is fixedly connected with the sliding block, the other end of the thrust spring is connected with a thrust adjusting knob, the length of the thrust spring is adjusted through the adjusting knob to change the size of the thrust, and therefore the cutting of optical fibers with different diameters is met. The thrust adjusting knob penetrates through the cutting device body and is installed on the cutting device body, when the knob is pushed in a clockwise rotating mode, the sliding block drives the second optical fiber clamping mechanism to move rightwards under the pushing of the thrust spring, when the knob is pushed in an anticlockwise rotating mode, the cam pushes the sliding block to move leftwards and compress the thrust spring, and the sliding block drives the second optical fiber clamping mechanism to restore to the original position.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, through the matched arrangement of the first optical fiber clamping mechanism, the second optical fiber clamping mechanism, the cutting mechanism and the pushing mechanism, the optical fiber to be cut is not only convenient to clamp and fix, but also convenient to cut the optical fiber to be cut, and meanwhile, the device is simple to operate and beneficial to popularization;

2. according to the invention, through the matched arrangement of the first optical fiber clamping mechanism, the linkage mechanism, the second optical fiber clamping mechanism and the connecting mechanism, the end with a protective layer and the end without the protective layer of the optical fiber to be cut are respectively clamped and fixed conveniently, the operation is simple, the stable clamping of the two ends of the optical fiber to be cut is facilitated, and the cutting operation of the optical fiber to be cut in the later period is facilitated;

3. according to the invention, through the arrangement of the propelling mechanism, the second optical fiber clamping mechanism is convenient to adjust, the tension of optical fibers with different diameters is convenient to control, the optical fibers are convenient to cut in the later period, and the application range of the optical fiber cutter is increased.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a schematic three-dimensional structure of the cutting device body of the present invention;

FIG. 2 is a schematic view of the internal cross-sectional structure of the cutting device of the present invention;

FIG. 3 is a schematic three-dimensional view of a first fiber clamping mechanism according to the present invention;

FIG. 4 is a schematic three-dimensional rear view of a first fiber clamping mechanism according to the present invention;

FIG. 5 is a schematic three-dimensional view of a second fiber holding mechanism according to the present invention;

FIG. 6 is a schematic three-dimensional structure at the propulsion mechanism of the present invention;

FIG. 7 is a schematic view of the connection between the bottom plate and the cover plate of the clamp according to the present invention;

FIG. 8 is a schematic view of the connection at the cutting mechanism of the present invention;

number in the figure: 1. a cutting device body; 2. a first fiber clamping mechanism; 3. a second fiber clamping mechanism; 4. a cutting mechanism; 41. an ultrasonic generator; 42. a diamond blade; 5. a propulsion mechanism; 51. a slider; 52. a cam; 53. a push knob; 54. a thrust spring; 55. a thrust adjusting knob; 6. a clamp; 61. a clamp base plate; 62. a clamp cover plate; 7. an optical fiber positioning seat; 71. an optical fiber positioning groove; 11. cutting the optical fiber to be cut; 21. a first hold-down cover plate; 2101. elastic pressing blocks; 22. a first placement platform; 23. a linkage mechanism; 2301. a pressing lever; 2302. a connecting rod; 31. a second push cover plate; 3101. briquetting; 32. a second placement platform; 33. a connecting mechanism; 3301. a lower pressure lever; 3302. an elastic link.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1

As shown in fig. 1-8, an ultrasonic optical fiber cutting knife comprises a cutting device body 1, wherein the cutting device body 1 comprises a first optical fiber clamping mechanism 2, a second optical fiber clamping mechanism 3, a cutting mechanism 4 and a pushing mechanism 5; the cutting mechanism 4 is installed on the top surface of the cutting device body 1, and the cutting mechanism 4 includes an ultrasonic generator 41 and a diamond blade 42, the diamond blade 42 is arranged at the output end of the ultrasonic generator 41, the ultrasonic generator 41 is connected with a circuit control board, and the circuit control board is used for driving the ultrasonic generator 41 to drive the diamond blade 42 to vibrate up and down to cut the optical fiber 11 to be cut. First optic fibre fixture 2 sets up in cutting mechanism 4 rear left side and with 1 fixed connection of cutting device body for to waiting to cut optic fibre 11 and carry out the centre gripping fixed, second optic fibre fixture 3 sets up on cutting mechanism 4 rear right side and is connected with advancing mechanism 5, be used for to waiting to cut the tip of optic fibre 11 and carry out the centre gripping fixed, second optic fibre fixture 3 demountable installation is on advancing mechanism 5, advancing mechanism 5 is used for driving second optic fibre fixture 3 along waiting to cut the length direction of optic fibre 11 and move along opposite directions or back on the back mutually. Cutting device body 1 sets up through the cooperation of first optic fibre fixture 2, second optic fibre fixture 3, cutting mechanism 4 and advancing mechanism 5, and the optic fibre of not only conveniently treating the cutting carries out the centre gripping fixed, satisfies the cutting of different diameter optic fibre moreover, and this ultrasonic wave fiber cutter knife easy operation has filled domestic and foreign blank simultaneously.

Example 2

As shown in fig. 1 to 8, in the case where the other parts are the same as those of embodiment 1, this embodiment is different from embodiment 1 in that:

the first optical fiber clamping mechanism 2 comprises a first placing platform 22 and a connecting rod 2302, the first placing platform 22 is fixedly connected with the top surface of the cutting device body 1, a first lower pressing cover plate 21 is arranged above the first placing platform 22, a linkage mechanism 23 is arranged between the first lower pressing cover plate 21 and the first placing platform 22 and is connected with the first placing platform 22 through the linkage mechanism 23, the linkage mechanism 23 is used for applying downward pressure to the first lower pressing cover plate 21 when the first lower pressing cover plate 21 and the first placing platform 22 are in a pressing state, the linkage mechanism 23 comprises a pressing rod 2301, the pressing rod 2301 is movably hinged with the first placing platform 22, the middle of the pressing rod 2301 is connected with the first lower pressing cover plate 21 through the connecting rod 2302, one end of the connecting rod 2302 is movably hinged with the pressing rod 2301, and the other end of the connecting rod 2302 is connected with the first lower pressing cover plate 21;

install anchor clamps 6 on the first place the platform 22, anchor clamps 6 include anchor clamps bottom plate 61 and anchor clamps apron 62, and anchor clamps bottom plate 61 cooperates with anchor clamps apron 62 and centre gripping is waited to cut optic fibre 11, is provided with elastic pressing block 2101 on the first gland plate 21, and when pressing rod 2301 pressed down, first gland plate 21 and first place the platform 22 interlock, and elastic pressing block 2101 tightly pushes down anchor clamps 6. When the first lower pressing cover plate 21 and the first placing platform 22 are in a pressing state, the connecting rod 2302 and the pressing rod 2301 are parallel to each other, and an included angle between the pressing rod 2301 and the first placing platform 22 is less than ninety degrees.

The second optical fiber clamping mechanism 3 comprises a second placing platform 32 and a second lower cover plate 31, the second placing platform 32 is connected with the propelling mechanism 5, the second lower cover plate 31 is movably hinged with one end of the second placing platform 32, a connecting mechanism 33 is arranged between the second lower cover plate 31 and the second placing platform 32, and the connecting mechanism 33 is used for applying downward pressure to the second lower cover plate 31 when the second lower cover plate 31 and the second placing platform 32 are in a pressing state;

the connecting mechanism 33 comprises a lower press rod 3301 and an elastic connecting rod 3302, the lower press rod 3301 is movably hinged with the second placing platform 32, the middle of the lower press rod 3301 is connected with the second lower press cover plate 31 through the elastic connecting rod 3302, and two ends of the elastic connecting rod 3302 are respectively movably hinged with the lower press rod 3301 and the second lower press cover plate 31, when the second lower press cover plate 31 and the second placing platform 32 are in a pressing state, the elastic connecting rod 3302 is parallel to the lower press rod 3301, and an included angle between the lower press rod 3301 and the second placing platform 32 is smaller than ninety degrees;

an optical fiber positioning seat 7 is fixedly installed on the second placing platform 32, an optical fiber positioning groove 71 is formed in the optical fiber positioning seat 7, the head of the optical fiber 11 to be cut is positioned in the optical fiber positioning groove 71, a pressing block 3101 matched with the optical fiber positioning groove 71 is arranged on the second lower pressing cover plate 31 and used for fixing the head of the optical fiber 11 to be cut, the lower pressing rod 3301 is pressed down, the second lower pressing cover plate 31 is meshed with the second placing platform 32, and the pressing block 3101 tightly presses the optical fiber 11 to be cut in the optical fiber positioning groove 71.

According to the invention, the optical fiber 11 to be cut with a protective layer is pressed tightly through the clamp bottom plate 61 and the clamp cover plate 62, the pressing rod 2301 is pressed downwards, the first pressing cover plate 21 is meshed with the first placing platform 22, the elastic pressing block 2101 tightly presses the clamp 6, so that one end of the optical fiber 11 to be cut with the protective layer is pressed tightly, meanwhile, under the cooperation of the first pressing cover plate 21 and the linkage mechanism 23, the linkage mechanism 23 is used for applying downward pressure to the first pressing cover plate 21 when the first pressing cover plate 21 and the first placing platform 22 are in a pressing state, so that the first pressing cover plate 21 and the clamp 6 are matched to press the end of the optical fiber 11 to be cut with the protective layer, then, the second pressing cover plate 31 and the second placing platform 32 are in a pressing state through pressing the pressing rod 3301 downwards, so that the pressing block 3101 tightly presses the head of the optical fiber 11 to be cut in the optical fiber positioning groove 71, and simultaneously, under the cooperation of the second pressing cover plate 31 and the connection mechanism 33, the connection mechanism 33 is used for fixing the head of the optical fiber 11 to be cut when the second pressing cover plate 31 and the second pressing cover plate 32 are in a pressing state.

Example 3

As shown in fig. 1 to 8, in the case where the other portions are the same as those of embodiment 2, the present embodiment is different from embodiment 2 in that:

the pushing mechanism 5 comprises a sliding block 51 and a cam 52, the sliding block 51 is arranged inside the cutting device body 1 in a sliding mode, the second placing platform 32 is detachably mounted on the top surface of the sliding block 51, the working surface of the cam 52 acts on the left side surface of the sliding block 51, the pushing mechanism 5 further comprises a pushing knob 53, and the cam 52 is movably connected with the cutting device body 1 through the pushing knob 53;

the pushing mechanism 5 further comprises a pushing spring 54, one end of the pushing spring 54 is connected with the sliding block 51, the other end of the pushing spring 54 is connected with a pushing adjusting knob 55, the pushing adjusting knob 55 is installed on the cutting device body 1 in a penetrating mode, when the pushing knob 53 rotates clockwise, the sliding block 51 drives the second optical fiber clamping mechanism 3 to move rightwards under the pushing of the pushing spring 54, when the knob 53 rotates anticlockwise, the cam 52 pushes the sliding block 51 to move leftwards and compress the pushing spring 54, and the sliding block 51 drives the second optical fiber clamping mechanism 3 to restore to the original position.

Through advancing mechanism 5's setting, when clockwise rotation impels knob 53, slider 51 drives second optic fibre fixture 3 right movement under thrust spring 54's promotion, and when anticlockwise rotation impeld knob 53, cam 52 impeld slider 51 to turn left movement and compress thrust spring 54, and slider 51 drives second optic fibre fixture 3 and resumes the primary importance, is convenient for carry out the centre gripping fixedly to optic fibre, and then the later stage of being convenient for is cutting the operation to it.

Specifically, the working principle and the operation method of the invention are as follows:

step one, the pushing knob 53 is rotated anticlockwise, so that the cam 52 pushes the slider 51 to drive the second optical fiber clamping mechanism 3 to move leftwards together, and the second optical fiber clamping mechanism 3 is restored to the original position;

step two, stripping off the protective layer from one end of the optical fiber 11 to be cut, wiping the protective layer with alcohol, and clamping and fixing the end, with the protective layer, of the optical fiber 11 to be cut through the clamp 6;

thirdly, the pressing rod 2301 is pressed downwards, so that the first lower pressing cover plate 21 is meshed with the first placing platform 22, the elastic pressing block 2101 tightly presses the clamp 6, and the linkage mechanism 23 is used for applying downward pressure to the first lower pressing cover plate 21 when the first lower pressing cover plate 21 and the first placing platform 22 are in a pressing state, so that one end of the optical fiber 11 to be cut, which is provided with a protective layer, is pressed tightly;

step four, the second lower pressing cover plate 31 and the second placing platform 32 are in a pressing state by pressing the lower pressing rod 3301, so that the pressing block 3101 tightly presses the head of the optical fiber 11 to be cut in the optical fiber positioning groove 71, and the connecting mechanism 33 is used for applying downward pressure to the second lower pressing cover plate 31 when the second lower pressing cover plate 31 and the second placing platform 32 are in the pressing state, so that the second lower pressing cover plate 31 is matched with the optical fiber positioning seat 7 to clamp and fix the head of the optical fiber 11 to be cut;

step five, the pushing knob 53 is rotated clockwise, the acting force of the cam 52 on the sliding block 51 is released, the thrust spring 54 pushes the sliding block 51 to drive the second optical fiber clamping mechanism 3 to move rightwards, and the tensioned optical fiber waits for cutting;

and step six, driving the ultrasonic generator 41 to drive the diamond blade 42 to vibrate up and down to cut the optical fiber 11 to be cut, and finishing the optical fiber cutting.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides an ultrasonic wave optical fiber cutting knife, includes cutting device body (1), its characterized in that: the cutting device body (1) comprises a first optical fiber clamping mechanism (2), a second optical fiber clamping mechanism (3), a cutting mechanism (4) and a pushing mechanism (5);

cutting mechanism (4) are installed on the top surface of cutting device body (1), just cutting mechanism (4) include supersonic generator (41) and diamond blade (42), first optic fibre fixture (2) set up in the rear left side of cutting mechanism (4) and with cutting device body (1) fixed connection for it is fixed to carry out the centre gripping to waiting to cut optic fibre (11), second optic fibre fixture (3) set up on the rear right side of cutting mechanism (4) and are connected with advancing mechanism (5), are used for carrying out the centre gripping to the tip of waiting to cut optic fibre (11) fixedly, second optic fibre fixture (3) demountable installation is on advancing mechanism (5), advancing mechanism (5) are used for driving second optic fibre fixture (3) along waiting to cut the length direction of optic fibre (11) to move along the opposite direction or back of the body mutually.

2. An ultrasonic fiber cleaver of claim 1, wherein: the diamond blade (42) is arranged at the output end of the ultrasonic generator (41), the ultrasonic generator (41) is connected with the circuit control board, and the circuit control board is used for driving the ultrasonic generator (41) to drive the diamond blade (42) to vibrate up and down so as to cut the optical fiber (11) to be cut.

3. An ultrasonic fiber cleaver of claim 1, wherein: the first optical fiber clamping mechanism (2) comprises a first placing platform (22) and a connecting rod (2302), the first placing platform (22) is fixedly connected with the top surface of the cutting device body (1), a first lower pressing cover plate (21) is arranged above the first placing platform (22), a linkage mechanism (23) is arranged between the first lower pressing cover plate (21) and the first placing platform (22) and is connected with the first placing platform (22) through the linkage mechanism (23), the linkage mechanism (23) is used for applying downward pressure to the first lower pressing cover plate (21) when the first lower pressing cover plate (21) and the first placing platform (22) are in a pressing state, the linkage mechanism (23) comprises a pressing rod (2301), the pressing rod (2301) is movably hinged with the first placing platform (22), the middle of the pressing rod (2301) is connected with the first lower pressing cover plate (21) through the connecting rod (2302), one end of the connecting rod (2302) is hinged with the pressing rod (2301), and the other end of the connecting rod (2302) is connected with the first lower pressing cover plate (21);

install anchor clamps (6) on first place the platform (22), anchor clamps (6) are including anchor clamps bottom plate (61) and anchor clamps apron (62), anchor clamps bottom plate (61) and anchor clamps apron (62) cooperate the centre gripping and wait to cut optic fibre (11), be provided with elastic pressing block (2101) on first push down apron (21), when press lever (2301) are pressed down, first push down apron (21) and first place the platform (22) interlock, elastic pressing block (2101) tightly pushes down anchor clamps (6).

4. An ultrasonic fiber cleaver of claim 3, wherein: when the first lower pressing cover plate (21) and the first placing platform (22) are in a pressing state, the connecting rod (2302) and the pressing rod (2301) are parallel to each other, and an included angle between the pressing rod (2301) and the first placing platform (22) is smaller than ninety degrees.

5. An ultrasonic fiber cleaver of claim 1, wherein: the second optical fiber clamping mechanism (3) comprises a second placing platform (32) and a second lower cover plate (31), the second placing platform (32) is connected with the pushing mechanism (5), the second lower cover plate (31) is movably hinged with one end of the second placing platform (32), a connecting mechanism (33) is arranged between the second lower cover plate (31) and the second placing platform (32), and the connecting mechanism (33) is used for applying downward pressure to the second lower cover plate (31) when the second lower cover plate (31) and the second placing platform (32) are in a pressing state;

the connecting mechanism (33) comprises a lower pressing rod (3301) and an elastic connecting rod (3302), the lower pressing rod (3301) is movably hinged to the second placing platform (32), the middle of the lower pressing rod (3301) is connected with the second lower pressing cover plate (31) through the elastic connecting rod (3302), two ends of the elastic connecting rod (3302) are movably hinged to the lower pressing rod (3301) and the second lower pressing cover plate (31) respectively, when the second lower pressing cover plate (31) and the second placing platform (32) are in a pressing state, the elastic connecting rod (3302) and the lower pressing rod (3301) are parallel to each other, and an included angle between the lower pressing rod (3301) and the second placing platform (32) is smaller than ninety degrees;

fixed mounting has optic fibre positioning seat (7) on second place the platform (32), optic fibre positioning seat (71) have been seted up on optic fibre positioning seat (7), the head of waiting to cut optic fibre (11) is fixed a position in optic fibre positioning seat (71), be provided with on second push down apron (31) with optic fibre positioning seat (71) assorted briquetting (3101), briquetting (3101) adopt the rubber material to make for to waiting to cut optic fibre (11) head fixed, work as depression bar (3301) are pressed down, second push down apron (31) and second place the platform (32) interlock, optic fibre (11) of waiting in optic fibre positioning seat (71) are tightly pushed down in briquetting (3101).

6. An ultrasonic fiber cleaver of claim 5, wherein: the pushing mechanism (5) comprises a sliding block (51) and a cam (52), the sliding block (51) is arranged in the cutting device body (1) in a sliding mode, the second placing platform (32) is detachably mounted on the top surface of the sliding block (51), the cam (52) is movably mounted on the sliding block (51), the pushing mechanism (5) further comprises a pushing knob (53), and the cam (52) is movably connected with the cutting device body (1) through the pushing knob (53);

advancing mechanism (5) still include thrust spring (54), the one end and slider (51) fixed connection of thrust spring (54), the other end of thrust spring (54) is connected with thrust adjust knob (55), thrust adjust knob (55) run through to be installed on cutting device body (1), and during clockwise rotation advances knob (53), slider (51) drive second optic fibre fixture (3) right movement under the promotion of thrust spring (54), and during anticlockwise rotation advances knob (53), cam (52), slider (51) move left and compress thrust spring (54), and slider (51) drive second optic fibre fixture (3) and resume original position.