Optical fiber cutter capable of automatically resetting blade

Abstract

An optical fiber cutter with a blade capable of automatically resetting comprises a gland, a base and a connecting unit connecting the gland and the base, and the gland comprises a pressing-breaking assembly arranged on the gland and facing the interior of the base and a connecting rod pressing pin controlling a resetting module to move; the base comprises a cutting module for cutting the optical fiber and a resetting module for resetting the cutting module after cutting; the cutting module comprises a cutting blade, and when the gland and the base are in a closed state, the symmetry axis of the pressing-breaking assembly coincides with the symmetry axis of the cutting blade. The reset module comprises a reset tension spring and a connecting rod; the other end of the reset tension spring is fixed to the side, provided with the connecting rod, of the base. One end of the connecting rod is fixed on the connecting unit and the other end is contacted with the cutting module. According to the utility model, through cooperation of the connecting rod, the connecting rod pressing pin and the reset tension spring, automatic reset of the cutting blade can be realized, and optical fiber cutting can be realized only through simple pressing.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber cutting, and more specifically, particularly relates to an optical fiber cutter with automatic blade reset. Background Art

[0002] An optical fiber cutting tool is used to cut quartz glass optical fibers as thin as a hair. After the cut optical fiber end is observed under magnification of hundreds of times, it is still flat before it can be used for device packaging, cold splicing, and discharge fusion splicing. Existing optical fiber cutters generally include a base, a pressing cover hinged to the base, an elastic breaking component installed on the pressing cover, a clamping component installed on the base, and a cutting component slidably arranged on the base. Among them, both the base and the pressing cover are fixedly provided with corresponding pressing pads. The cutting component includes a cutting seat slidably arranged on the base and a cutting blade, and the cutting blade is fixedly arranged on the cutting seat through bolts.

[0003] When the existing optical fiber cutter is used multiple times, the operator needs to manually or through the cooperation of a series of complex structures to reset the cutting blade. The structure is complex and the operation is cumbersome. Moreover, when the cutting edge point of the cutting blade is worn or dull, the operator needs to first rotate the bolt to loosen the cutting blade, rotate the cutting blade by a certain angle, and then rotate the bolt to lock the cutting blade to replace and use other cutting edge points of the cutting blade for cutting. However, the process of the operator manually resetting the cutting blade or replacing the cutting edge point is relatively cumbersome and takes a lot of time, affecting the cutting efficiency.

[0004] Therefore, the problems existing in the prior art need to be further improved and developed. Summary of the Invention

[0005] (I) Purpose of the Utility Model: To solve the problems existing in the above-mentioned prior art, the purpose of the utility model is to provide an optical fiber cutter with automatic blade reset, which can realize the automatic reset of the cutting blade and only needs simple pressing to realize optical fiber cutting.

[0006] (II) Technical Solution: To solve the above technical problems, the present technical solution provides an optical fiber cutter with automatic blade reset, including a pressing cover, a base, and a connecting unit connecting the pressing cover and the base. The pressing cover includes a breaking component arranged inside the pressing cover facing the base and a connecting rod pressing pin for controlling the movement of the reset module.

[0007] The base includes a cutting module for cutting an optical fiber and a reset module for resetting the cutting module after cutting is completed; the cutting module includes a cutting blade. When the gland and the base are in a closed state, the axis of symmetry of the pressing and breaking component coincides with the axis of symmetry of the cutting blade; the reset module includes a reset tension spring and a connecting rod; one end of the reset tension spring is connected to the cutting module, and the other end is fixed to one side of the base where the connecting rod is provided; one end of the connecting rod is fixed to the connecting unit, and the other end contacts the cutting module.

[0008] Preferably, the pressing and breaking component is connected to the gland through a compression spring. The pressing and breaking component includes an inverted U-shaped pressing and breaking block installed on the top of the gland and a return block provided on the side of the inverted U-shaped pressing and breaking block; the central opening gap of the inverted U-shaped pressing and breaking block matches the edge of the cutting blade, and the height of the return block is higher than the height of the inverted U-shaped pressing and breaking block.

[0009] Preferably, the cutting module includes a connecting seat and a blade seat, and the connecting seat and the blade seat are fixed through an adjusting pin; the cutting blade is arranged on the blade seat, and the highest point edge of the cutting blade is higher than the upper surface of the base cavity; a card slot corresponding to the connecting rod is provided on one side of the connecting seat close to the connecting unit.

[0010] Preferably, an anti-collision platform is provided on one side of the blade seat close to the gland. When the gland and the base are in a closed state, the anti-collision platform contacts the return block.

[0011] Preferably, the blade seat and the connecting seat are fixed through an adjusting pin, and the rotation angle of the blade seat is realized through the adjusting pin. A height adjusting spring is provided at one end of the blade seat far from the adjusting pin and on one side of the base far from the gland. The height adjusting spring includes a top spring and a tension spring arranged in parallel.

[0012] Preferably, the cutting module further includes a rotating gear, a hook member, a reed and a reed dial connected to the reed; the rotating gear is coaxially arranged with the cutting blade as a whole, and a spring sleeve is sleeved on the connecting shaft of the cutting blade where the rotating gear is arranged.

[0013] The connecting hook of the hook member is matched with the rotating gear. One end of the hook member away from the rotating gear is a cross bar parallel to the upper surface of the base cavity. A fixing bolt is provided on the cross bar of the hook member, and the hook member is fixed to the base as a whole through the fixing bolt. On the cross bar of the hook member, two hook member compression springs are arranged on the side facing the gland with the fixing bolt as the axis. The two hook member compression springs include a first hook member compression spring close to the connecting hook and a second hook member compression spring away from the connecting hook. A first extrusion pin is arranged on the first hook member compression spring, and the first extrusion pin corresponds to a second extrusion pin in the gland.

[0014] A reed is arranged below the cross bar at one end of the hook member away from the rotating gear. The reed is an integral structure, with an opening at one end close to the connecting unit and a closed end close to the cutting blade.

[0015] Preferably, teeth are evenly arranged on the circumference of the rotating gear. After each cutting press, the hook member hooks the teeth to rotate the rotating gear by an angle of one or more teeth.

[0016] Preferably, the connecting rod is of an irregular shape and includes a bearing, a first plane, a second plane and a limiting groove. The first plane and the second plane are respectively adapted to the edges of the base cavity.

[0017] When the gland and the base are in an open state, the first plane is flush with the upper surface of the base, and the second plane is in contact with the lower side of the upper surface of the base. The height difference between the first plane and the second plane is equal to the wall thickness of the base. The bearing is located at the tail end of the connecting rod close to the second plane. One end of the connecting rod is fixed on the connecting unit, and the other end away from the connecting unit is in contact with the cutting module through the bearing. The limiting groove is located on one side of the connecting rod close to the connecting unit, and the radian of the limiting groove is equal to the angle between the gland and the base.

[0018] Preferably, clamping rubber pads are arranged on the contact surfaces of the gland and the base with the cutting blade as the axis. A compression spring is arranged at the connection of the clamping rubber pad of the gland.

[0019] An optical fiber fixture is further arranged on the surface of the base in contact with the gland. The optical fiber fixture includes an optical fiber placement groove. The optical fiber fixture is arranged on one side of one of the clamping rubber pads away from the cutting blade, and the optical fiber fixture is perpendicular to the clamping rubber pad.

[0020] Length marks are arranged along the optical fiber placement groove on the side of the optical fiber placement groove.

[0021] Preferably, a lock hole is further provided on the connecting unit, and a locking pin is correspondingly provided on one side of the base close to the connecting unit; a locking switch is provided on the side perpendicular to the contact surfaces of the gland and the base. The locking switch includes a switch toggle and a locking switch groove. Magnets are provided at both ends of the side of the switch toggle in contact with the base, and magnets are also provided at both ends of the corresponding locking switch groove.

[0022] Preferably, a reed toggle is provided on the side of the base away from the gland. The reed toggle is fixed to the reed, and magnets are provided at both ends of the side of the reed toggle in contact with the base.

[0023] (III) Beneficial effects: For an optical fiber cutter with automatic blade reset of the present invention, firstly, through the cooperation of the connecting rod, connecting rod press pin, and return spring, automatic reset of the cutting blade can be achieved, and the structure is simple. Secondly, through the cooperation of the crescent-shaped limit groove of the connecting rod and the connecting rod limit pin, as well as the limit between the bearing and the connecting seat card slot, the movement amplitude of the cutting blade is controllable. Thirdly, by providing a rotating gear on the cutting blade and the cooperation of the rotating gear with the hook member, rotation of the cutting blade can be achieved, and the cutting blade can be used to the greatest extent; finally, through the adjustment of the angle and vertical position between the blade seat and the connecting seat, the cutting blade can be adjusted. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of the first preferred embodiment of an optical fiber cutter with automatic blade reset of the present invention;

[0025] Figure 2 is a schematic internal structure diagram of the gland and the base;

[0026] Figure 3 is a schematic internal structure diagram of the gland;

[0027] Figure 4 is a schematic structural diagram of the second preferred embodiment of an optical fiber cutter with automatic blade reset of the present invention;

[0028] Figure 5 is a schematic structural diagram of the base of the second preferred embodiment;

[0029] Figure 6 is a schematic internal structure diagram of the base of the second preferred embodiment;

[0030] Figure 7 is a schematic structural diagram of the cutting module adjustment of the second preferred embodiment;

[0031] Figure 8 is a schematic structural diagram of the locked state of an optical fiber cutter with automatic blade reset of the present invention.

[0032] Reference numerals: gland 1, pressing handle 11, breaking component 12, inverted U-shaped breaking block 121, return block 122, connecting rod pin 13, compression spring 14, second extrusion pin 16;

[0033] Base 2, locking pin 21, switch toggle 22, magnet 23, optical fiber fixture 24, optical fiber placement groove 2411, connecting seat 25, card slot 251, adjusting pin 252, blade seat 26, cutting blade 261, rotating gear 262, hook member 263, first hook member compression spring 2631, first extrusion pin 2632, fixing bolt 2633, second hook member compression spring 2634, top spring 2635, tension spring 2636, reed 264, reed toggle 265, anti-collision platform 266, reset tension spring 27, connecting rod 28, bearing 281, first plane 282, second plane 283, limit groove 284, fiber take-up box 29;

[0034] Rotating shaft 3, torsion spring 31; clamping rubber pad 4. Detailed implementation manners

[0035] The following further describes the present utility model in detail with reference to preferred embodiments. More details are set forth in the following description to facilitate a full understanding of the present utility model. However, the present utility model is obviously capable of being implemented in many other different ways than those described herein. Those skilled in the art can make similar generalizations and deductions according to the actual application situation without departing from the connotation of the present utility model. Therefore, the protection scope of the present utility model should not be limited by the content of this specific embodiment.

[0036] The accompanying drawings are schematic diagrams of embodiments of the present utility model. It should be noted that this accompanying drawing is only for illustration and is not drawn under the condition of equal proportion, and should not be used to limit the actual scope of protection required by the present utility model.

[0037] An optical fiber cutter with automatic blade reset, as Figure 1 、 Figure 8 shown, includes a gland 1, a base 2, and a connecting unit connecting the gland 1 and the base 2. The gland 1 and the base 2 are connected into an integral body through the connecting unit to form the whole of the optical fiber cutter with automatic blade reset.

[0038] The connecting unit is described by taking the rotating shaft 3 as an example. As Figure 2As shown, a torsion spring 31 is also sleeved on the rotary shaft 3. Due to the torsion spring 31, when no external force is applied, a certain angle is presented between the gland 1 and the base 2, and the angle between the gland 1 and the base 2 can be adjusted by the torsion spring 3. A lock hole is also provided on the rotary shaft 3, and a locking pin 21 is correspondingly provided on the side of the base 2 close to the rotary shaft 3; a locking switch is provided on the side perpendicular to the contact surfaces of the gland 1 and the base 2. The locking switch includes a switch toggle 22 and a locking switch groove. Magnets 23 are provided at both ends of the side of the switch toggle 22 in contact with the base 2, and magnets 23 are also provided at both ends of the corresponding locking switch groove. The mutual attraction of the magnets 23 can ensure the fixed position of the switch toggle 22 without sliding, thus not affecting the insertion and locking of the locking pin 21 and the lock hole. Through the insertion and cooperation of the locking pin 21 and the lock hole, the locking and limiting between the gland 1 and the base 2 can be realized, thereby locking an optical fiber cutter with automatic blade reset, facilitating storage, and at the same time avoiding scratches on the human body caused by the blade.

[0039] As Figure 3 shown, the gland 1 includes a pressing handle 11, a cutting component 12, a connecting rod pressing pin 13, a connecting rod limiting pin, a second pressing pin 16, and two clamping rubber pads 4. The cutting component 12, the connecting rod pressing pin 13, and the clamping rubber pads 4 are all arranged inside the pressing handle 11 facing the base 2. The cutting component 12 is arranged at the center of the front end of the gland 1, far from the rotary shaft 3. The two clamping rubber pads 4 are respectively arranged on both sides of the cutting component 12, and the clamping rubber pads 4 and the cutting component 12 are located on the same axis parallel to the rotary shaft 3. A connecting rod pressing pin 13 is arranged on the side of the cutting component 12 close to the rotary shaft 3. By means of the connecting rod pressing pin 13, the connecting rod can be pressed down, thereby realizing the automatic return of the cutting blade.

[0040] Inside the pressing handle 11, a compression spring 14 is arranged directly above the clamping rubber pad 4, and the cutting component 12 is also connected to the pressing handle 11 through the compression spring 14. Through the compression spring 14, it can be ensured that the clamping rubber pad 4 of the gland 1 clamps the optical fiber tightly with the clamping rubber pad 4 of the base, and then the cutting component 12 presses and cuts the optical fiber with a scratch made by the cutting blade.

[0041] The crushing component 12 includes an inverted U-shaped crushing block 121 mounted on the top of the gland and a return block 122 disposed on the side of the inverted U-shaped crushing block. The central opening gap of the inverted U-shaped crushing block 121 matches the edge of the cutting blade. That is, when the inverted U-shaped crushing block 121 drops, the edge of the cutting blade is stuck into the central opening gap of the inverted U-shaped crushing block 121, which can ensure that the cross-section of the crushed optical fiber is flat and will not collide with the cutting blade 261. The height of the return block 122 should be higher than that of the inverted U-shaped crushing block 121.

[0042] When pressing down the gland, the return block 122 will first contact the stainless steel anti-collision platform of the base. The return block 122 will squeeze the compression spring 14 upward. At the same time, continue to press down the pressing handle. When the cutting blade scratches on the optical fiber and reaches the rightmost end, at this time, the return block 122 is squeezed to the topmost position, creating a certain distance from the anti-collision platform. Under the action of the compression spring 14, the entire crushing component will be ejected downward. After ejection, the height of the inverted U-shaped crushing block 121 is higher than that of the clamping rubber pad 4, realizing the crushing of the optical fiber, and the cross-section of the crushed optical fiber is flatter, meeting the actual needs.

[0043] On the side of the gland 1 close to the return shaft 3, a connecting rod limit pin is also provided. The connecting rod limit pin passes through the connecting rod, and a crescent-shaped limit groove 284 is provided on the corresponding connecting rod. The radian of the limit groove 284 matches the angle of the torsion spring; by sliding the connecting rod limit pin in the limit groove 284, the position of the connecting rod is restricted, thereby restricting the position of the cutting blade, making the final end position of the cutting blade fixed. When the connecting rod limit pin slides from one end of the limit groove 284 to the other end, the cutting / reset of the cutting blade and the opening / closing of the optical fiber cutter are realized.

[0044] As Figure 5 、 Figure 6 As shown, the base 2 includes a cutting module, a reset module, an optical fiber clamp 24, a detachable optical fiber collecting box 29, and two clamping rubber pads 4 corresponding to the clamping rubber pad 4 of the gland. The cutting module and the reset module are both located inside the cavity of the base 2; the optical fiber clamp 24 is located on one side of the cavity of the base 2 close to the gland 1; the optical fiber collecting box 29 is on the other side away from the optical fiber clamp 24. The upper edge of the optical fiber collecting box 29 is flush with the upper surface of the base cavity, collecting the waste optical fiber cut on the optical fiber clamp 24; the optical fiber is clamped by the two corresponding clamping rubber pads.

[0045] The cutting module includes a connecting seat 25 and a blade seat 26, and the connecting seat 25 and the blade seat 26 are fixed by an adjusting pin 252. A cutting blade 261 is provided on the blade seat 26. The cutting blade 261 is perpendicular to the optical fiber fixture 24, and a part of the circumference protrudes from the optical fiber fixture 24. That is, when the gland and the base are in the closed state, the symmetry axis of the pressing and breaking assembly coincides with the symmetry axis of the cutting blade, and the highest point edge of the cutting blade 261 should be higher than the height of the clamping rubber pad 4, and is stuck with the groove of the inverted U-shaped pressing and breaking block of the pressing and breaking assembly 12, and no collision will occur. On the upper part of one side of the connecting seat 25 close to the rotating shaft 3, a card slot 251 corresponding to the connecting rod bearing is provided. By the limit of the bearing and the card slot 251, the position of the connecting rod is further restricted, and the automatic reset of the blade is better realized.

[0046] More preferably, as Figure 4 , Figure 5 , Figure 6 shown, the cutting module further includes a rotating gear 262, a hook member 263, a reed 264, and a reed toggle 265 connected to the reed 264, which can realize the rotation of the cutting blade 261, make the best use of the cutting blade, and be more economical. The rotating gear 262 is arranged on the side of the cutting blade 261 close to the fiber collecting box 29. The rotating gear 262 and the cutting blade 261 are coaxially arranged as a whole, and a spring sleeve is sleeved on the connecting shaft of the cutting blade 261 where the rotating gear 262 is arranged, which is more convenient for the rotation of the cutting blade 261. The connecting hook of the hook member 263 matches the rotating gear 262. Tooth teeth are arranged on the outer circumference of the rotating gear 262. By hooking the connecting hook of the hook member with the rotating gear 262, the rotating gear 262 can be rotated by an angle of one or more tooth teeth, so as to drive the cutting blade 261 to rotate by an angle of one or more tooth teeth. One end of the hook member 263 far from the rotating gear 262 is a cross bar parallel to the upper surface of the base cavity. A fixing bolt 2633 is arranged on the cross bar of the hook member 263. The hook member 263 is fixed to the base 2 by the fixing bolt 2633, and two hook member compression springs are arranged on the cross bar toward the gland side with the fixing bolt 2633 as the axis. The two hook member compression springs include a first hook member compression spring 2631 close to the connecting hook and a second hook member compression spring 2634 far from the connecting hook. A first extrusion pin 2632 is arranged on the first hook member compression spring 2631, and the first extrusion pin 2632 corresponds to the second extrusion pin 16 in the gland. By corresponding extrusion between the second extrusion pin 16 in the gland and the first extrusion pin 2632, the hooking and relaxation between the hook member 263 and the rotating gear 262 can be realized.

[0047] More preferably, the height of the hook member 263 can also be adjusted to adjust the single rotation angle of the rotating gear 262. The number of teeth on one circumference of the rotating gear 262 can be set according to actual conditions. In this embodiment, 24 teeth are provided on one circumference of the rotating gear 262. By hooking the connecting hook to the rotating gear 262, the rotation of the cutting blade 261 can be achieved. Thus, after each cutting press, the cutting blade rotates 15°. When pressed 24 times, that is, after cutting 24 times, the cutting blade 261 rotates one circle. It can also be that the cutting blade rotates 30° each time, and after cutting 12 times, the cutting blade rotates one circle.

[0048] Specifically, the second pressing pin 16 is fixed inside the pressing handle 11 by a thread. By rotating and adjusting the second pressing pin 16, fine adjustment of the height of the second pressing pin 16 can be achieved, thereby adjusting the hooking position between the hook member 263 and the rotating gear 262 and the single rotation angle of the cutting blade 261.

[0049] The specific implementation process is as follows: When the pressing handle 11 is pressed down, the second pressing pin 16 will press against the first pressing pin, and then press down the first hook member spring 2631 near the connecting hook. The hook member 263 will rotate around the fixing bolt 2633 of the base, causing the connecting hook of the hook member 263 to move downward, and the end away from the connecting hook to tilt upward, causing the second hook member spring 2634 to press against the inner wall of the upper surface of the base. At this time, the hook member 263 is in a locked state. At this time, the connecting rod will be pressed down, and at the same time, under the pulling force of the return spring, the connecting seat 25 drives the blade seat 26 to move toward the direction close to the rotation shaft 3 to achieve fiber cutting. When the pressing handle 11 is released, the pressure cover 1 will rebound under the action of the torsion spring 31. At this time, the connecting rod will push the connecting seat 25 to move away from the rotation shaft 3, and the second pressing pin 16 will slowly reduce the pressure on the first pressing pin. Under the action of the first hook member spring and the second hook member spring, the hook member 263 returns to the working state, and the connecting hook is hooked to the rotating gear 262. At this time, the connecting seat 25 is continuously pushed away from the rotation shaft 3, thereby achieving the rotation of the cutting blade 261.

[0050] A reed 264 is provided below the cross bar at one end of the hook member 263 away from the rotating gear 262. The reed 264 is an integral structure, with an opening at one end close to the rotary shaft 3 and a closed end close to the cutting blade, so that the reed 264 can be squeezed and reset. A reed toggle 265 is provided on one side of the base 2 away from the gland. The reed toggle 265 has the same structure as the switch toggle. The reed toggle 265 is fixed to the reed 264. Magnets are provided at both ends on the side of the reed toggle in contact with the base, and magnets are also provided at both ends inside the corresponding reed toggle groove. The left and right movement of the reed 264 is realized through the reed toggle 265, that is, moving in a direction away from the rotary shaft 3 or in a direction close to the rotary shaft 3.

[0051] When the reed toggle 265 is toggled in a direction away from the rotary shaft 3, the reed 264 will rotate the hook member 263 around the fixing bolt by a certain angle. At this time, the hook member 263 is in a locked state, that is, the same state as when the second pressing pin 16 is pressed downward, that is, the connecting hook of the hook member will move downward and cannot be hooked to the rotating gear 262, so the rotation of the cutting blade cannot be realized. When the reed toggle 265 is toggled in the direction of the rotary shaft 3, the hook member 263 is in a working state and can be hooked to the rotating gear 262 to rotate the cutting blade.

[0052] More preferably, the blade seat 26 and the connecting seat 25 are fixed by an adjusting pin 252. Therefore, the blade seat 26 can be rotated by the adjusting pin 252 to ensure that the cutting blade 261 is in an optimal state, that is, the highest point edge of the cutting blade is perpendicular to the clamping rubber pad 4, ensuring that the cut fiber optic port is the flattest. At one end of the blade seat 26 away from the adjusting pin 252 and on one side of the base away from the gland 1, a height adjusting spring is also provided. The height adjusting spring includes a top spring 2635 and a pull spring 2636 arranged in parallel. As Figure 7 shown, a spring bolt is also provided below the height adjusting spring at a position away from the gland 1. The relative positions of the top spring 2635 and the pull spring 2636 are not limited as long as they cooperate with each other to realize the adjustment of the height of the cutting blade 261.

[0053] The height adjustment of the blade seat 26 can be achieved by loosening or tightening the spring bolt, thereby translating the cutting blade up and down. When the height is too high and it needs to move inside the base, only the spring bolt of the top spring needs to be tightened and the spring bolt of the tension spring needs to be loosened. At this time, the blade seat 26 will move towards the direction close to the gland 1, realizing the upward movement of the cutting blade 261. On the contrary, loosen the spring bolt of the top spring and tighten the spring bolt of the tension spring, and the blade seat 26 will move away from the gland 1, realizing the downward movement of the cutting blade 261.

[0054] The reset module includes a reset tension spring 27 connecting the cutting module and a connecting rod 28 arranged on the rotary shaft 3. The reset tension spring 27 is arranged on the connecting seat 25 of the cutting module and always maintains a pulling force towards the rotary shaft 3. One end of the connecting rod 28 is fixed on the rotary shaft 3, and the other end far from the rotary shaft 3 contacts the connecting seat 25 of the cutting module through a bearing 281. Through the rolling of the bearing 281, the connecting rod 28 can move up and down along the edge of the connecting seat 25.

[0055] The connecting rod 28 is of an irregular shape, including a bearing 281, a first plane 282, a second plane 283 and a crescent-shaped limit groove 284, and the first plane 282 and the second plane 283 are respectively adapted to the edges of the base cavity; the bearing 281 is located at the end of the connecting rod 28 close to the second plane 283; the crescent-shaped limit groove 284 is located on one side of the connecting rod close to the rotary shaft 3, and the radian of the crescent-shaped limit groove 284 matches the angle between the base 2 and the gland 1, and different sizes can be set according to the actual situation. When pressing down the gland 1, the connecting rod press pin will press down the first plane 282 of the connecting rod, and the bearing 281 will be pushed out of the card slot of the connecting seat 25 and move down along the edge of the connecting seat 25 until the connecting rod limit pin reaches the boundary of the crescent-shaped limit groove 284 close to the rotary shaft 3. At this time, the connecting seat 25 drives the blade seat 26 to move towards the rotary shaft 3 under the action of the reset tension spring 27, and the cutting blade 221 scratches the optical fiber pressed by the clamping rubber pad 4. When the gland 1 is released, the connecting rod press pin will slowly release the pressure on the connecting rod, and the bearing 281 will move up along the edge of the connecting seat 25 until the bearing enters the card slot of the connecting seat 25 for limiting. At this time, the connecting rod limit pin reaches the boundary on the side far from the rotary shaft 3, realizing the function of double limit and double insurance, avoiding the risk of the friction force between the connecting rod limit pin and the crescent-shaped limit groove 284 becoming smaller during long-term use. And at this time, the connecting seat 25 is moved away from the rotary shaft 3 by the connecting rod, driving the cutting blade to automatically reset.

[0056] More preferably, an anti-collision platform 266 is further provided on the side of the blade seat 26 close to the gland 1. By the collision between the anti-collision platform 266 and the cutting-off assembly 12, the limitation of the lowest position of the collision assembly 12 is realized. And the anti-collision platform 266 is made of stainless steel, while the whole of the fiber optic cutter with automatically resetting blade is made of aluminum alloy. Therefore, the deformation or damage caused by the long-term collision between the anti-collision platform 266 and the return block 122 is avoided, which affects the use effect.

[0057] The two clamping rubber pads 4 are respectively arranged on both sides of the cutting blade 261, and the height is flush with the highest point edge of the cutting blade 261. The fiber optic clamp 24 includes a fiber optic placement groove 2411. The fiber optic clamp 24 is arranged on the side of one of the clamping rubber pads 4 away from the cutting blade 261, and the fiber optic clamp 24 is perpendicular to the clamping rubber pad 4. Along the side of the fiber optic placement groove 2411, a length mark is further arranged along the fiber optic placement groove 2411, which can be read during cutting to cut the fiber optic with an accurate length, which is simple and convenient.

[0058] More preferably, the number of the fiber optic placement grooves 2411 is not specifically limited, and a plurality of different models of the fiber optic placement grooves 2411 can be set according to the diameter of the fiber optic.

[0059] Working principle: When using the present utility model to cut the fiber optic, first, the switch button 22 is toggled downward. At this time, the locking pin 21 withdraws from the lock hole, and the fiber optic cutter with automatically resetting blade is opened. At this time, the connecting rod limit pin is located at the end of the crescent-shaped limit groove 284 of the connecting rod away from the return shaft 3. The first plane 282 of the connecting rod is flush with the outer wall of the upper surface of the base cavity, the second plane 283 of the connecting rod is flush with the inner part of the upper surface of the base cavity, and the bearing 281 of the connecting rod is located in the card slot of the connecting seat 25. The cutting module is on the side away from the return shaft 3.

[0060] Place the optical fiber to be cut in the corresponding optical fiber placement groove 21, press down the pressing cover 1, align the two pairs of clamping rubber pads 4 respectively, clamp the optical fiber to be cut, continue to press the pressing cover 1, the connecting rod press pin will exert pressure on the first plane 282 of the connecting rod, and the bearing will be pressed out from the clamping groove 251 of the connecting seat 25 and move downward along the edge of the connecting seat 25. When the connecting rod limit pin reaches one end of the crescent-shaped limit groove 284 of the connecting rod close to the rotating shaft 3, the bearing 281 reaches the lowest position. At this time, the cutting module moves downward under the action of the reset tension spring 27, and the cutting blade 261 will make a scratch on the pressed optical fiber, so that the breaking module 12 will move downward to break the optical fiber and realize the cutting of the optical fiber.

[0061] When the optical fiber cutting is completed, release the pressing handle 11. Under the action of the torsion spring 31, the pressing cover 1 will bounce upward, and the pressure of the connecting rod press pin 13 on the first plane 282 of the connecting rod 28 will be gradually released. The connecting rod will move upward along the edge of the connecting seat 25 until it is stuck in the clamping groove 251 of the connecting seat 25. At this time, the connecting rod limit pin is located on the side of the crescent-shaped limit groove 284 of the connecting rod 28 away from the rotating shaft 3, and the cutting module moves to the side away from the rotating shaft 3 under the action of the connecting rod 28 to realize the reset of the cutting blade 261.

[0062] During the process of relaxing the pressing cover, the breaking assembly 12 will contact the anti-collision platform 266 and bounce up the breaking assembly. At the same time, the pressure between the first extrusion pin and the second extrusion pin 16 will be reduced, so that the connecting hook of the hook member 263 will move upward and hook with the rotating gear 262, and the connecting seat 25 continues to drive the blade seat 26 to move leftward, thereby realizing the rotation of the cutting blade 261.

[0063] For an optical fiber cutter with automatic blade reset of the present utility model, firstly, through the cooperation of the connecting rod 28, the connecting rod press pin 13, and the reset tension spring 27, the automatic reset of the cutting blade 261 can be realized, and the structure is simple. Secondly, through the cooperation of the crescent-shaped limit groove 284 of the connecting rod 28 and the connecting rod limit pin, and the limit between the bearing 281 and the clamping groove 251 of the connecting seat, the moving amplitude of the cutting blade 261 is controllable. Thirdly, by arranging a rotating gear 262 on the cutting blade and the cooperation between the rotating gear and the hook member 263, the rotation of the cutting blade can be realized, and the cutting blade 261 can be used to the greatest extent; finally, through the angle and vertical position adjustment between the blade seat 26 and the connecting seat 25, the cutting blade 261 can be adjusted.

[0064] The above content is an illustration of the preferred embodiments of the present utility model, which can help those skilled in the art to more fully understand the technical solutions of the present utility model. However, these embodiments are merely examples and cannot be construed as limiting the specific implementation manners of the present utility model to the descriptions of these embodiments. For those of ordinary skill in the technical field to which the present utility model pertains, without departing from the concept of the present utility model, several simple deductions and transformations can still be made, and all should be regarded as falling within the protection scope of the present utility model.

Claims

1. An optical fiber cutter with automatic blade reset, comprising a gland, a base, and a connection unit connecting the gland and the base, characterized in that, The gland includes a breaking component arranged on the inner side of the gland facing the base and a connecting rod press pin for controlling the movement of the reset module; The base includes a cutting module for cutting an optical fiber and a reset module for resetting the cutting module after cutting; the cutting module includes a cutting blade. When the gland and the base are in a closed state, the symmetry axis of the breaking component coincides with the symmetry axis of the cutting blade; the reset module includes a reset tension spring and a connecting rod; one end of the reset tension spring is connected to the cutting module, and the other end is fixed to the side of the base where the connecting rod is arranged; one end of the connecting rod is fixed to the connecting unit, and the other end contacts the cutting module.

2. The fiber optic cutter with automatic blade reset according to claim 1, wherein The breaking component is connected to the gland through a compression spring. The breaking component includes an inverted U-shaped breaking block installed on the top of the gland and a return block arranged on the side of the inverted U-shaped breaking block; the central opening gap of the inverted U-shaped breaking block matches the edge of the cutting blade, and the height of the return block is higher than the height of the inverted U-shaped breaking block.

3. The fiber optic cutter with automatic blade reset according to claim 2, wherein, The cutting module includes a connecting seat and a blade seat, which are fixed through an adjusting pin; the cutting blade is arranged on the blade seat, and the highest point edge of the cutting blade is higher than the upper surface of the base cavity; a slot corresponding to the connecting rod is arranged on the side of the connecting seat close to the connecting unit.

4. An optical fiber cutter with automatic blade reset according to claim 3, characterized in that, A collision prevention platform is arranged on the side of the blade seat close to the gland. When the gland and the base are in a closed state, the collision prevention platform contacts the return block.

5. The fiber optic cutter with automatic blade reset according to claim 3, characterized in that, The blade seat and the connecting seat are fixed through an adjusting pin. By rotating the blade seat through the adjusting pin, a height adjusting spring is arranged at one end of the blade seat away from the adjusting pin and on the side of the base away from the gland. The height adjusting spring includes a top spring and a tension spring arranged in parallel.

6. The fiber optic cutter with automatic blade reset according to claim 3, wherein, The cutting module further includes a rotating gear, a hook, a reed, and a reed turning knob connected to the reed; the rotating gear is coaxially arranged with the cutting blade as a whole, and a spring sleeve is sleeved on the connecting shaft of the cutting blade where the rotating gear is arranged. The connecting hook of the hook matches the rotating gear. One end of the hook away from the rotating gear is a cross bar parallel to the upper surface of the base cavity. A fixing bolt is arranged on the cross bar of the hook, and the hook is fixed to the base as a whole through the fixing bolt. Two hook compression springs are arranged on the cross bar of the hook on the side facing the gland with the fixing bolt as the axis. The two hook compression springs include a first hook compression spring close to the connecting hook and a second hook compression spring away from the connecting hook; a first extrusion pin is arranged on the first hook compression spring, and the first extrusion pin corresponds to a second extrusion pin in the gland. A reed is arranged below the cross bar at one end of the hook away from the rotating gear. The reed is an integral structure, with an opening at one end close to the connecting unit and a closed end at one end close to the cutting blade.

7. An optical fiber cutter with automatic blade reset according to claim 6, characterized in that, Teeth are evenly arranged on the circumference of the rotating gear. After each cutting press, the hook hooks the teeth to rotate the rotating gear by an angle of one or more teeth.

8. The fiber optic cutter with automatic blade reset according to claim 1, wherein, The connecting rod has an irregular shape and includes a bearing, a first plane, a second plane, and a limiting groove. The first plane and the second plane are respectively adapted to the edges of the base cavity. When the gland and the base are in the open state, the first plane is flush with the upper surface of the base, and the second plane is in contact with the lower side of the upper surface of the base. The height difference between the first plane and the second plane is equal to the wall thickness of the base. The bearing is located at the tail end of the connecting rod near the second plane. One end of the connecting rod is fixed on the connecting unit, and the other end away from the connecting unit is in contact with the cutting module through the bearing. The limiting groove is located on one side of the connecting rod near the connecting unit, and the radian of the limiting groove is equal to the angle between the gland and the base.

9. The fiber optic cutter with automatic blade reset according to claim 1, characterized in that, Clamping rubber pads are arranged on the contact surfaces of the gland and the base with the cutting blade as the axis. A compression spring is arranged at the connection of the clamping rubber pad of the gland. An optical fiber fixture is further arranged on the surface of the base in contact with the gland. The optical fiber fixture includes an optical fiber placement groove. The optical fiber fixture is arranged on one side of one of the clamping rubber pads away from the cutting blade, and the optical fiber fixture is perpendicular to the clamping rubber pad. Length marks are arranged along the optical fiber placement groove on the side of the optical fiber placement groove.

10. The fiber optic cutter with automatic blade reset according to claim 1, characterized in that, A lock hole is further arranged on the connecting unit, and a locking pin is correspondingly arranged on one side of the base near the connecting unit. A locking switch is arranged on the side perpendicular to the contact surfaces of the gland and the base. The locking switch includes a switch toggle and a locking switch groove. Magnets are arranged at both ends of the side of the switch toggle in contact with the base, and magnets are also arranged at both ends of the corresponding locking switch groove.

11. A fiber optic cutter with automatic blade reset according to claim 6 or 10, characterized in that, A reed toggle is arranged on one side of the base away from the gland. The reed toggle is fixed to the reed. Magnets are arranged at both ends of the side of the reed toggle in contact with the base.

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