CN115113332A

CN115113332A - Optical fiber cutting device

Info

Publication number: CN115113332A
Application number: CN202210751961.0A
Authority: CN
Inventors: 余敬; 陆苏; 刘建; 成天龙; 蓝云益
Original assignee: Dongguan Xinmeiyang Technology Co ltd; Shenzhen Everwin Precision Technology Co Ltd
Current assignee: Dongguan Xinmeiyang Technology Co ltd; Shenzhen Everwin Precision Technology Co Ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-09-27
Anticipated expiration: 2042-06-29
Also published as: CN115113332B

Abstract

An optical fiber cutting device comprises a case, a support fixed on the case, an optical fiber guide assembly arranged on the support and used for guiding an optical fiber to move, an upper clamping piece fixed on the support and positioned above the optical fiber guide assembly, a lower clamping piece movably fixed on the support and positioned below the upper clamping piece, and a cutter assembly arranged on one side of the lower clamping piece, wherein the lower clamping piece comprises a lifting mechanism arranged on the support and a lower clamping piece connected on the lifting mechanism, a cutter groove used for exposing the optical fiber is formed in the free end of the lower clamping piece, and the cutter assembly can be correspondingly inserted into the cutter groove to cut the optical fiber. The application realizes the automatic cutting of the microminiature optical fiber.

Description

Optical fiber cutting device

Technical Field

The present application relates to the field of automation, and more particularly to an optical fiber cutting apparatus.

Background

At present, some small-sized mobile terminals are provided with a proximity sensor which is used for automatically turning off a screen when a portable product such as a mobile phone is put into a pocket so as to avoid mistaken touch; or when the protective shell is closed, the tablet personal computer automatically turns off the screen to enter a certain state. The sensor is a proximity sensing optical transceiver system disclosed in the patent application No. 202110585787.2 of the people's republic of China, and specifically, under a screen of an electronic device, light is emitted by a light emitting unit, and the light is reflected by a proximity object after passing through the screen and then received by a light receiving unit to judge the distance of the proximity object, so that a central processing unit is informed to perform corresponding actions. However, the light transmission of the system requires a large area of light holes at the corresponding position of the screen, which may generate a large bright spot, resulting in a visual defect of the screen. If a special light transmission medium is adopted, the light emission unit can be omitted to directly receive the light reflected by the natural light to realize the purpose, or the area requirement on the perspective point of the screen can be greatly reduced through the transmission of the transmission medium.

Disclosure of Invention

In view of the above, it is desirable to provide an optical fiber cutting device that automatically cuts a micro optical fiber at a predetermined length.

In order to solve the technical problem, the present application provides an optical fiber cutting device, which includes a case, a bracket fixed on the case, an optical fiber guiding assembly arranged on the bracket to guide an optical fiber to move, an upper clamping member fixed on the bracket and located above the optical fiber guiding assembly, a pull-down assembly movably fixed on the bracket and located below the upper clamping member, and a cutter assembly arranged on one side of the pull-down assembly, wherein the pull-down assembly includes a lifting mechanism arranged on the bracket and a lower clamping member connected on the lifting mechanism, a cutter slot for exposing the optical fiber is arranged at a free end of the lower clamping member, and the cutter assembly can be correspondingly inserted into the cutter slot to cut the optical fiber.

Preferably, after the cutter assembly is pushed to be inserted into the cutter groove to cut the optical fiber, the lower clamping member releases the optical fiber and clamps the optical fiber again after being driven by the lifting mechanism to move upwards for a predetermined distance, then the upper clamping member releases the clamping of the optical fiber, and the lower clamping member pulls the optical fiber to move downwards for a predetermined distance under the driving of the lifting mechanism; the upper clamp then clamps the optical fiber and the cutter assembly again severs the optical fiber.

Preferably, the drop-down subassembly is still including being fixed in the cylinder of elevating system bottom, down the holder connection be fixed in on the cylinder, the holder is including first splint and the second splint of mutually supporting down, first splint and second splint can open and shut, the right side free end of first splint and second splint is the exposed core, the cutter groove is seted up in the exposed core and will the exposed core is cut apart into lateral part and lateral part down.

Preferably, the first clamping plate and the second clamping plate are matched at the clamping end to form a wire hole for clamping the optical fiber, the inner diameter of the wire hole in the upper side part is larger than the outer diameter of the optical fiber, and the inner diameter of the wire hole in the lower side part is not larger than the outer diameter of the optical fiber.

Preferably, go up the holder and include the connecting piece and pass through the connecting piece is located first clamp on the support is grabbed and second clamping jaw, first clamp grab with but second clamping jaw centre gripping or open, the cooperation is formed with the line hole between first clamp grab and the second clamping jaw.

Preferably, flexible pieces are embedded in inner wall surfaces of the wire hole of the upper clamping piece and the wire hole of the lower clamping piece, and the optical fiber is clamped through the flexible pieces, so that the outer wall of the optical fiber is prevented from being damaged.

Preferably, the optical fiber guiding assembly includes a winding wheel, a plurality of feeding wheels for guiding the optical fiber, a tensioning wheel, a plurality of positioning wheels, and a feeding alignment member, the winding wheel is driven by a motor and fixed to the support, the feeding wheel includes a first feeding wheel disposed on a lower right side of the winding wheel, a second feeding wheel disposed on an upper right side of the first feeding wheel, and a third feeding wheel disposed on an upper right side of the second feeding wheel, the tensioning wheel is connected to a sensor, the sensor can sense tension applied to the tensioning wheel, the positioning wheels include a first positioning wheel located on a right side of the tensioning wheel, a second positioning wheel located on a lower right side of the first positioning wheel, and a third positioning wheel located below the first positioning wheel, and the second positioning wheel is located between the first positioning wheel and the third positioning wheel.

Preferably, the optical fiber is drawn out from the lower part of the coiling wheel and passes through the lower side of the first feeding wheel, the upper sides of the second feeding wheel and the third feeding wheel, the lower side of the tensioning wheel, the right sides of the first positioning wheel and the third positioning wheel and the left side of the second positioning wheel, and then the optical fiber enters the feeding normal position piece, a wire hole is arranged in the feeding normal position piece, and the wire hole of the feeding normal position piece is opposite to the wire hole of the upper clamping piece.

Preferably, when the optical fiber is tensioned, the sensor senses the tension of the sensing wheel, and when the optical fiber is loose, the sensor senses the slack of the sensing wheel and controls the forward rotation or the reverse rotation of the coiling wheel to enable the optical fiber to be in a normal tension degree.

Preferably, the optical fiber section cut off by the cutter component falls into a clamp, a clamp moving seat is arranged below the pull-down component, the clamp is fixed on the clamp moving seat, when the optical fiber is cut off, the cut optical fiber section enters a clamping position of the clamp, and when the optical fiber is cut off next time, the clamp moving seat drives the clamp to move a clamping position along the longitudinal direction so as to clamp the next cut optical fiber section.

Preferably, the clamp comprises a first clamping block, a second clamping block, a guide post and an adjusting post, wherein the guide post and the adjusting post are used for connecting the first clamping block and the second clamping block into a whole, the first clamping block and the second clamping block comprise a supporting edge part positioned on the transverse outer side, an adjacent clamping end part extending from the supporting edge part and arranged on a clamping surface on the outer side surface of the clamping end part, a first clamping groove is formed in the clamping surface of the first clamping block in the vertical direction, a second clamping groove matched with the first clamping groove is formed in the clamping surface of the second clamping block in the vertical direction, the adjusting post comprises an exposed head part extending out of the transverse outer side of the first clamping block, and a spring is clamped between the exposed head part and the outer wall surface of the supporting edge part of the first clamping block.

Preferably, the first clamping block penetrates through the positioning hole from top to bottom, a positioning column penetrating into the positioning hole is arranged on the clamp moving seat, a side pushing mechanism is further arranged on the right side of the clamp moving seat, and the side pushing mechanism pushes the exposed head to enable the first clamping block and the second clamping block to be opened when the optical fiber cutting device works.

Preferably, the second presss from both sides the inslot and has inlayed the colloid, the lateral surface of colloid with the clamping face parallel and level, first clamp splice with open space of putting into between the second clamp splice is less than the diameter of optic fibre.

Preferably, a supporting plate is arranged below the first clamping groove and the second clamping groove of the first clamping block and the second clamping block, and a gap is reserved between the supporting plate and the bottom surface of the clamping end part.

This application optic fibre cutting device is through setting up holder and drop-down subassembly, and holder and cutter groove down in the drop-down subassembly sets up, through the reciprocating of drop-down subassembly comes the length of control cutting off optic fibre, and through the cutter groove with the cooperation messenger of cutter cuts off the port as far as possible neat, the follow-up of being convenient for is polished. Compared with the existing manual cutting-off technology, the efficiency and the cutting-off quality are greatly improved. Meanwhile, the cut optical fiber is directly clamped in the clamp, so that the difficulty of subsequent clamping is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a perspective view of an optical fiber cutting apparatus according to the present invention;

FIG. 2 is a partially enlarged view of a dotted circle of the optical fiber cutting device of the present application shown in FIG. 1;

FIG. 3 is a front view of the optical fiber cleaving device of the present application;

FIG. 4 is a combination view of the lower clamp assembly, the upper clamp assembly and the cutter of the optical fiber cutting apparatus according to the present invention;

FIG. 5 is a front view of the lower clamp assembly, the upper clamp assembly and the cutter of the optical fiber cutting apparatus of the present application;

FIG. 6 is an enlarged partial view of the dotted circle shown in FIG. 5;

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 5;

FIG. 8 is a cross-sectional view of a cleaved optical fiber in an optical fiber cleaving device of the present application;

FIG. 9 is a perspective view of a clamp of the present application;

FIG. 10 is a perspective view of another angle of the clamp of the present application;

FIG. 11 is an enlarged partial view of the dotted circle shown in FIG. 9;

FIG. 12 is a cross-sectional view taken along line B-B of FIG. 9;

fig. 13 is a sectional view taken along the dotted line C-C shown in fig. 9.

Description of the reference numerals

A case-10; a table-top-11; a universal wheel-12; bracket-20; column-21; a frame body-22; a clamp moving seat-30; a rail seat-31; a slide-32; a base-34; a lateral pushing mechanism-33; a cylinder-331; push end-332; pushing the protrusion-333; a fiber guide assembly-40; a coiling wheel-41; a first feed wheel-421; a second feed wheel-422; a third feed wheel-423; a threading plate-424; a tension wheel-43; a sensor-44; a first positioning wheel-451; a second positioning wheel-452; a third positioning wheel-453; feeding a material righting part-47; a holder-471; a limiting plate-472; a first limiting plate-473; a second limiting plate-474; line holes-475, 56, 66; pull-down assembly-50; a lifting mechanism-51; a lower clamp-52; a first cleat-521; a second splint-522; a clamping end-523; an upper side-524; a lower side-525; a cutter slot-53; a cylinder-54; -55,65 of flexible member; an upper clamp-60; a connector-61; a first jaw-62; a second jaw-63; cutter assembly-70; a power source-71; cutter holder-72; a vertical fixing part-721; a cutter connecting part-722; a cutter-73; clamp-80; a first clamping block-81; a second clamping block-82; support edge-811,821; a clamping end-812,822; a clamping surface-813,823; a first clip groove-814; a second clip groove-824; junk slot-815,825; positioning hole-816; colloid-826; an evacuation portion-83; an adjustment column-84; an exposed head-841; a spring-85; a guide post-86; a support plate-87; placing the gap-88; an optical fiber-90; a light guide body-91; an outer cladding-92.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments.

In the present application, the X direction shown in fig. 1 is taken as the lateral direction, the Y direction is taken as the longitudinal direction, and the Z direction is taken as the vertical direction.

Referring to fig. 8, the optical fiber cutting apparatus of the present application is configured to cut an optical fiber 90 according to a predetermined length, where the optical fiber 90 includes a light guide 91 transparent for guiding light and an outer cladding 92 wrapping the light guide 91. The outer cladding 92 is opaque to the possibility of blocking the transmission of light, so that light can only be transmitted through the light guide 91. The optical fiber 90 is very small in size, having an outer diameter of only 0.5mm, for transmitting light in the proximity sensor. In the existing research and development, the optical fiber 90 is cut off manually, the length of each section of optical fiber 90 is difficult to guarantee, and the two ends of the optical fiber 90 are polished after being cut off, so that the surface of the optical fiber is smooth and free from dirt, and an automatic cutting technology and a clamping technology are urgently needed to support a subsequent optical fiber polishing process.

Referring to fig. 1 to 3 and 7, the optical fiber cutting apparatus of the present application includes a movable housing 10, a bracket 20 and a clamp moving base 30 fixed on the housing 10, a fiber guiding assembly 40 fixed on the bracket 20, a pull-down assembly 50 pulling an optical fiber 90 to move, an upper clamping member 60 clamping the optical fiber 90 at an upper side of the pull-down assembly 50, a cutter assembly 70 cutting the optical fiber 90 on the pull-down assembly 50, and a clamp 80 disposed on the clamp moving base 30 for receiving the cut optical fiber 90.

The case 10 includes a table 11 for fixing the bracket 20 and the clamp moving base 30, and a universal wheel 12 and a fixing leg installed at a lower side of the case 10.

The support 20 includes a column 21 fixed on the table top and a frame 22 fixed on the column 21 and extending along the transverse direction. The optical fiber guiding assembly 40 includes a material winding wheel 41 fixed on a first lateral side of the frame 22 and wound with the optical fiber 90, a plurality of material feeding wheels guiding the path of the optical fiber 90, a tension wheel 43 and a sensor 44 for sensing tension, a plurality of positioning wheels keeping the optical fiber 90 in a correct path, and a material feeding aligning member 47 extending in a vertical direction and positioning the optical fiber 90 inside.

The feeding wheels comprise a first feeding wheel 421 positioned at the lower right side of the coiling wheel 41, a second feeding wheel 422 positioned at the upper right side of the first feeding wheel 421 and a third feeding wheel 423 positioned at the upper right side of the second feeding wheel 422. The distance between the first feeding wheel 421 and the second feeding wheel 422 is greater than the distance between the second feeding wheel 422 and the third feeding wheel 423. A threading plate 424 is arranged between the first feeding wheel 421 and the second feeding wheel 422, and the threading plate 424 is closer to the second feeding wheel 422. The tension wheel 44 is disposed at the right side of the third feeding wheel 423, the tension wheel 44 is connected to the frame body 22 through the sensor 44, the tension wheel 44 can move up and down along with the sensor 44 and detect the tension degree, and if the tension force reaches a predetermined value, the winding wheel 41 rotates to release the optical fiber 90.

The positioning wheels include a first positioning wheel 451 positioned on the right side of the tension wheel 44, a second positioning wheel 452 positioned on the lower right side of the first positioning wheel 451, and a third positioning wheel 453 positioned on the lower side of the first positioning wheel 451. The optical fiber 90 is drawn out from the lower side of the winding wheel 41, and then winds around the lower side of the tension wheel 43 through the lower side of the first feeding wheel 421, the threading plate 424, the upper side of the second feeding wheel 422 and the third feeding wheel 423, winds up to the upper side of the first positioning wheel 451, and finally passes through the left side of the second positioning wheel 452 and the right side of the third positioning wheel 453. The second positioning wheel 452 is located between the first positioning wheel 451 and the third positioning wheel 453, and a vertical distance between a line groove of the first positioning wheel 451 and the third positioning wheel 453 and a line groove of the second positioning wheel 452 is equal to the diameter of the optical fiber 90.

Referring to fig. 2 and 4 to 7, the feeding alignment member 47 includes a pair of position-limiting plates 472 for the optical fiber 90 to pass through and a fixing seat 471 for fixing the position-limiting plates 472 on the frame 22. The limiting plate 472 includes a first limiting plate 473 and a second limiting plate 474, and a wire hole 475 for the optical fiber 90 to pass through is formed after the first limiting plate 473 and the second limiting plate 474 are matched. The inner diameter of the wire hole 475 is larger than the outer diameter of the optical fiber 90, so that the wire hole 475 does not obstruct the downward movement of the optical fiber 90, and a wire inlet at the top end of the wire hole 475 is funnel-shaped, thereby avoiding scraping the outer cladding 92 of the optical fiber 90.

Pan feeding normal position 47 below is equipped with go up holder 60, go up holder 60 including connect in connecting piece 61 on the support body 22, through connecting piece 61 with a pair of clamping jaw that cylinder on the support body 22 is connected, the clamping jaw includes first clamping jaw 62 and second clamping jaw 63. A pair of the

jaws

62,63 can be switched between an open and a clamped condition to release the optical fiber 90 or to clamp the optical fiber 90. A pair of the

jaws

62,63 have a wire hole 66 formed therebetween for receiving the optical fiber 90.

A lower pulling assembly 50 is arranged on the lower side of the upper clamping member 60, and the lower pulling assembly 50 comprises a lifting mechanism 51 fixed on the left side of the frame body 22, an air cylinder 54 fixed below the lifting mechanism 51, and a lower clamping member 52 fixed on the lifting mechanism 51 and connected with the air cylinder 54. The lower clamp 52 includes a pair of clamping plates including a first clamping plate 521 and a second clamping plate 522 which are engaged with each other. The first clamping plate 521 and the second clamping plate 522 include clamping ends 523 extending below the upper clamping member 60. The cutter groove 53 is formed in the clamping end 523 from right to left, and a wire hole 56 is further formed in the clamping end 523 after the first clamping plate 521 is matched with the second clamping plate 522. The sipe 53 divides the gripping end 523 into an upper portion 524 and a lower portion 525.

The inner wall surfaces of the wire holes 66 and 56 of the upper clamping piece 60 and the lower clamping piece 52 are provided with

flexible pieces

65 and 55, and the

flexible pieces

65 and 55 ensure that the optical fiber 90 is clamped with certain elasticity and the outer cladding 92 of the optical fiber 90 is not damaged. The material of the

flexible members

65,55 needs to be capable of clamping the optical fiber 90 without damaging the outer wall of the optical fiber 90, and preferably PEEK material, namely PEEK, is used. The thread hole 56 in the upper side portion 524 of the cutter groove 523 of the lower clamp 52 is larger than the outer diameter of the optical fiber 90, so that when the optical fiber 90 is cut in the cutter groove 523, the optical fiber 90 in the upper side portion 524 is not completely fixed, and a certain tension can be provided and transmitted into the cutter groove 523, so that the optical fiber 90 is cut under the condition that a certain tension is generated in the cutter groove 523.

The cutter assembly 70 is located at the right side of the lower clamping member 52 and fixed on the frame body 22, and the cutter assembly 70 comprises a power source 71 fixed on the frame body 22, a cutter fixing member 72 connected to the left side of the power source 71, and a cutter 73 installed at the left end of the cutter fixing member 72. The cutter blade 73 faces the cutter groove 53 in the lateral direction, and the cutter blade 73 moves leftward and enters the cutter groove 53 by the urging of the power source 71 (preferably, an air cylinder), and cuts the optical fiber 90 into a predetermined length of optical fiber segment in the cutter groove 53. The cutter fixing member 72 includes a vertical fixing portion 721 and a cutter connecting portion 722 extending leftward from the left side of the bottom of the vertical fixing portion 721, the cutter 73 is fixed to the left end of the cutter connecting portion 722, and the vertical fixing portion 721 is disposed to avoid other components.

The optical fiber segments cut by the cutter 73 will precisely fall into the predetermined clamping positions of the clamp 80, and the clamp 80 can clamp a plurality of optical fiber segments at a time, and the clamp 80 is fixed on the clamp moving seat 30 to realize longitudinal movement, so that different clamping positions are opposite to the lower side of the lower clamping member 52. Specifically, the clamp moving base 30 includes a rail base 31 fixed on the table 11 of the chassis 10 along the longitudinal direction, a sliding block 32 capable of moving back and forth on the rail base 31, a base 34 erected on the sliding block 32, and a side pushing mechanism 33 fixed on the right side of the base 34. The clamp 80 is positioned on the upper surface of the base 34 and the clamping position of the clamp 80 is changed by the longitudinal movement of the slider 32. The side pushing mechanism 33 includes a cylinder 331 fixed on the right side of the base 34, a pushing end 332 connected to the left side of the cylinder 331, and a plurality of pushing protrusions 333 formed by protruding leftward from the pushing end 332.

The working principle of the optical fiber cutting apparatus of the present application will be described below:

the free end of the optical fiber 90 in the material winding wheel 41 is firstly pulled to the linear hole 56 in the upper side portion 524 of the lower clamping piece 52 of the pull-down assembly 50 along a predetermined path, and the free end of the optical fiber 90 is exposed in the cutter groove 53, at this time, the optical fiber 90 is mainly fixed by the upper clamping piece 60.

After the machine is started, the lower clamping member 52 of the pull-down assembly 50 is opened and moved upward by the lifting mechanism 51 for a certain distance, and then the lower clamping member 52 clamps the length of the optical fiber 90 at the position, and the free end of the optical fiber 90 is exposed downward below the lower clamping member 52. The upper clamping member 60 opens the clamping of the optical fiber 90, the lower clamping member 52 of the pull-down assembly 50 is driven by the lifting mechanism 51 to move downwards to a predetermined position and stop, and the upper clamping member 60 clamps the optical fiber 90 again. The cutter 73 of the cutter assembly 70 is pushed by the power source 71 to be inserted into the cutter groove 53 of the lower clamping member 52 leftwards and cut the optical fiber 90, and the optical fiber segment cut by the cutter 73 falls into the corresponding clamping position of the clamp 80. Then, the above operation is repeated again to cut the optical fiber 90.

During the pulling of the optical fiber 90, the tension wheel 43 senses a pulling force or a slack force, and drives the winding wheel 41 to rotate forward or backward to keep the optical fiber 90 at a proper tension.

This application optic fibre cutting device is through setting up holder 60 and drop-down subassembly 50, and set up down holder 52 and cutter groove 53 in the drop-down subassembly 50, through the length of cutting off optic fibre 90 is controlled in the reciprocating of drop-down subassembly 50, and through cutter groove 53 with the cooperation messenger of cutter 73 cuts off the port as far as possible neat, the follow-up of being convenient for is polished. Compared with the existing manual cutting-off technology, the efficiency and the cutting-off quality are greatly improved. Meanwhile, the cut optical fiber 90 is directly clamped in the clamp 80, so that the difficulty of subsequent clamping is reduced.

As shown in fig. 9 to 13, the clamp 80 of the present application includes a first clamping block 81 and a second clamping block 82 disposed in the left-right direction, an adjusting post 84 and a guiding post 86 connecting the first clamping block 81 and the second clamping block 82 together, and a spring 85.

The first clamping block 81 includes a supporting side portion 811 on the right side, a clamping end portion 812 extending leftward from the supporting side portion 811, a clamping surface 813 formed on the left end surface of the clamping end portion 812, and a plurality of first clamping grooves 814 vertically opened on the clamping surface 813. The inner wall of the first clamping groove 814 is arc-shaped and ranges from a quarter of a circular arc to a semicircle. The upper and lower surfaces of the edge of the clamping end 812 are recessed to form flutes 815, and the surface of the flutes 815 does not exceed the upper and lower surfaces of the clamping end 812. The top and bottom edges of the first clamping groove 814 are chamfered to facilitate entry of the fiber segment. At least two positioning holes 816 are formed in the supporting edge 811 of the first clamping block 81 in a vertically penetrating manner.

The second clamp block 82 includes a support side portion 821 on the left side, a clamping end portion 822 extending rightward from the support side portion 821, a clamping surface 823 formed on the right end surface of the clamping end portion 822, and a plurality of second clamp grooves 824 vertically opened in the clamping surface 823. The upper and lower surfaces of the edge of the clamping end 822 are recessed to form chip grooves 825, and the surfaces of the chip grooves 825 do not exceed the upper and lower surfaces of the clamping end 822. A glue body 826 is embedded in the second clamping groove 825, the glue body 826 is inserted into the clamping end portion 822 to the left, and the right side surface of the glue body 826 is flush with the clamping surface 823.

The clamping end 812,822 of the first clamping block 81 and the second clamping block 82 has a thickness smaller than that of the supporting edge 812,822 to form a clearance 83 under the clamping end 812,822. The space 83 is formed by hollowing out upward from the bottom surface of the holding end 812,822. A plurality of lock holes (not numbered) for the guide posts 86 and the adjusting posts 84 to pass through are transversely formed in the lower portion of the supporting edge 811,821, and the first clamping block 81 and the second clamping block 82 are respectively connected to the two longitudinal ends of the guide posts 86. One end of the adjusting column 84 is fixed in the locking hole of the second clamping block 82, the other end of the adjusting column penetrates through the right side of the supporting edge 811 of the first clamping block 81, an exposed head 841 positioned outside the right side of the first clamping block 81 is formed at the right end of the adjusting column 84, the spring 85 is clamped between the right side surface of the supporting edge 811 of the first clamping block 81 and the exposed head 841, the first clamping block 81 and the second clamping block 82 are always in a clamping state under a natural state through the elasticity of the spring 85, and only when the first clamping block 81 is fixed and the adjusting column 84 is pushed leftwards, the first clamping block 81 and the second clamping block 82 are in an open state. Neither the guide posts 86 nor the adjustment posts 84 extend beyond the bottom surface of the support edge 811,821.

Referring to fig. 1 to 13, when the clamp 80 of the present application is applied to the optical fiber cutting apparatus, the first clamping block 81 of the clamp 80 is fixed on the base 34 of the clamp moving seat 30 through the positioning hole 816, and a pair of positioning posts (not numbered) for positioning the first clamping block 81 are disposed on the base 34. The exposed head of the adjusting column 84 faces the pushing projection 333 of the side pushing mechanism 33. When the optical fiber 90 is cut, the side-pushing mechanism 33 pushes the adjusting column 84 leftward to open the first clamping block 81 and the second clamping block 82, and in the open state, the width h of the insertion gap 88 between the clamping surface 813 of the first clamping block 81 and the clamping surface 823 of the second clamping block 82 is smaller than the diameter of the optical fiber 90. To ensure that the fiber segment falling into the first gripper channel 814 does not fall out of the first gripper channel 814. When the clamp moving base 30 moves one clamping position in the longitudinal direction when cutting one section of the optical fiber 90 until all the first clamping grooves 814 are inserted with the optical fiber section, the side pushing mechanism 33 returns to the right, and the first clamping block 81 and the second clamping block 82 clamp the optical fiber section through the spring 85. The clamp 80 is then removed. A supporting plate 87 is disposed on the base 34 at a position corresponding to the clamping surface 813,823 of the first clamping block 81 and the second clamping block 82, and the supporting plate 87 supports the optical fiber section from falling down.

The clamp 80 is provided with the first clamping block 81 and the second clamping block 82, and the first clamping block 81 and the second clamping block 82 are always in a clamping state by the spring 85, so that the clamp is particularly suitable for clamping a miniature product. When the optical fiber cutting device is applied to the optical fiber cutting device, the first clamping block 81 and the second clamping block 82 are pushed away by the side pushing mechanism to enable the optical fiber cutting device to be in an open state so as to facilitate blanking, the use is convenient, and automatic clamping is realized.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only express preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An optical fiber cutting device is characterized by comprising a case, a support fixed on the case, an optical fiber guiding assembly arranged on the support and used for guiding an optical fiber to move, an upper clamping piece fixed on the support and positioned above the optical fiber guiding assembly, a pull-down assembly movably fixed on the support and positioned below the upper clamping piece, and a cutter assembly arranged on one side of the pull-down assembly, wherein the pull-down assembly comprises a lifting mechanism arranged on the support and a lower clamping piece connected on the lifting mechanism, a cutter groove used for exposing the optical fiber is formed in the free end of the lower clamping piece, and the cutter assembly can be correspondingly inserted into the cutter groove to cut the optical fiber.

2. The optical fiber cutting apparatus according to claim 1, wherein after the cutter assembly is pushed to be inserted into the cutter groove to cut the optical fiber, the lower clamping member releases the optical fiber and re-clamps the optical fiber after being moved upward by the elevating mechanism by a predetermined distance, and then releases the clamping of the optical fiber by the upper clamping member, and the lower clamping member pulls the optical fiber downward by a predetermined distance by the elevating mechanism; the upper clamp then clamps the optical fiber and the cutter assembly again severs the optical fiber.

3. The optical fiber cutting device according to claim 2, wherein the pull-down assembly further comprises an air cylinder fixed at the bottom of the lifting mechanism, the lower clamping member is connected and fixed to the air cylinder, the lower clamping member comprises a first clamping plate and a second clamping plate which are matched with each other, the first clamping plate and the second clamping plate can be opened and closed, the right free ends of the first clamping plate and the second clamping plate are clamping ends, and the cutter groove is arranged at the clamping ends and divides the clamping ends into an upper side portion and a lower side portion.

4. The optical fiber cutting apparatus according to claim 3, wherein said first clamping plate and said second clamping plate cooperate to form a string hole for clamping said optical fiber at said clamping end, an inner diameter of the string hole in said upper side portion is larger than an outer diameter of said optical fiber, and an inner diameter of the string hole in said lower side portion is not larger than the outer diameter of said optical fiber.

5. The optical fiber cutting device according to claim 4, wherein the upper clamping member includes a connecting member, and a first clamping jaw and a second clamping jaw provided on the holder through the connecting member, the first clamping jaw and the second clamping jaw can be clamped or opened, and a wire hole is cooperatively formed between the first clamping jaw and the second clamping jaw.

6. The optical fiber cutting apparatus according to claim 5, wherein flexible members are embedded in inner wall surfaces of the wire hole of the upper holding member and the wire hole of the lower holding member, and the optical fiber is held by the flexible members so as to prevent damage to an outer wall of the optical fiber.

7. The optical fiber cutting apparatus according to claim 6, wherein said optical fiber guiding assembly includes a take-up reel driven by a motor and fixed to said holder, a plurality of feed reels guiding said optical fiber, a tension reel, a plurality of positioning reels, and a feed aligning member, the feeding wheel comprises a first feeding wheel arranged at the right lower side of the coiling wheel, a second feeding wheel arranged at the right upper side of the first feeding wheel and a third feeding wheel arranged at the right upper side of the second feeding wheel, the tension wheel is connected with a sensor which can sense the tension of the tension wheel, the positioning wheel comprises a first positioning wheel positioned on the right side of the tensioning wheel, a second positioning wheel positioned on the right lower side of the first positioning wheel and a third positioning wheel positioned below the first positioning wheel, and the second positioning wheel is positioned between the first positioning wheel and the third positioning wheel.

8. The optical fiber cutting device according to claim 7, wherein the optical fiber is drawn from below the winding wheel through the lower side of the first feeding wheel, the upper sides of the second feeding wheel and the third feeding wheel, the lower side of the tension wheel, the right sides of the first positioning wheel and the third positioning wheel, and the left side of the second positioning wheel, and then the optical fiber enters the feeding right position member, a wire hole is formed in the feeding right position member, and the wire hole of the feeding right position member is aligned with the wire hole of the upper clamping member.

9. The optical fiber cleaver of claim 8, wherein the sensor senses tension in the sensing wheel when the optical fiber is tensioned and senses slack in the sensing wheel when the optical fiber is loose, and controls the take-up wheel to rotate in forward or reverse directions to place the optical fiber under normal tension.

10. The apparatus for cleaving an optical fiber according to claim 6, wherein the segment of the optical fiber cleaved by the cutter assembly falls into a clamp, and a clamp moving base is provided under the pull-down assembly, the clamp being fixed to the clamp moving base, the cleaved segment of the optical fiber being inserted into one of the clamping positions of the clamp when the optical fiber is cleaved, and the clamp moving base driving the clamp to move one of the clamping positions in a longitudinal direction to clamp a next cleaved segment of the optical fiber when the optical fiber is cleaved next.

11. The optical fiber cutting device according to claim 10, wherein the clamp includes a first clamping block, a second clamping block, and a guide post and an adjustment post integrally connecting the first clamping block and the second clamping block, the first clamping block and the second clamping block include a supporting side portion located on a lateral outer side, a clamping end portion extending from the supporting side portion and adjacent to the supporting side portion, and a clamping surface disposed on an outer side surface of the clamping end portion, a first clamping groove is vertically formed on the clamping surface of the first clamping block, a second clamping groove matched with the first clamping groove is vertically formed on the clamping surface of the second clamping block, the adjustment post includes an exposed head portion extending out of the lateral outer side of the first clamping block, and a spring is clamped between the exposed head portion and an outer wall surface of the supporting side portion of the first clamping block.

12. The optical fiber cutting device according to claim 11, wherein a positioning hole is formed through the first clamping block, a positioning post penetrating into the positioning hole is provided on the clamp moving base, and a side pushing mechanism is further provided on a right side of the clamp moving base, and the side pushing mechanism pushes the exposed head to open the first clamping block and the second clamping block when the optical fiber cutting device is in operation.

13. The optical fiber cutting device according to claim 12, wherein a rubber body is embedded in the second clamping groove, an outer side surface of the rubber body is flush with the clamping surface, and an open insertion gap between the first clamping block and the second clamping block is smaller than a diameter of the optical fiber.

14. The optical fiber cutting device according to claim 13, wherein a support plate is provided below the first clamping groove and the second clamping groove of the first clamping block and the second clamping block, and a gap is provided between the support plate and a bottom surface of the clamping end portion.